Home / 28,017.56-38,657.52-15,915.39

Finding the Fourth Proportional to 28,017.56, 38,657.52 and 15,915.39

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Solution

The fourth proportional to 28,017.56, 38,657.52 and 15,915.39 is: 21,959.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.56 : 38,657.52 = 15,915.39 : x
  2. Step 2: Convert to fraction form
    28,017.56/38,657.52 = 15,915.39/x
  3. Step 3: Cross multiply
    28,017.56x = 38,657.52 × 15,915.39
  4. Step 4: Simplify right side
    28,017.56x = 615,249,507.23
  5. Step 5: Solve for x
    x = 615,249,507.23/28,017.56
  6. Step 6: Final answer
    x = 21,959.43

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Half scale
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Double scale
Find fourth proportional to 28,018.56, 38,658.90 and 15,916.39
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.