Home / 28,106.40-38,789.40-15,533.64

Finding the Fourth Proportional to 28,106.40, 38,789.40 and 15,533.64

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Solution

The fourth proportional to 28,106.40, 38,789.40 and 15,533.64 is: 21,437.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.40 : 38,789.40 = 15,533.64 : x
  2. Step 2: Convert to fraction form
    28,106.40/38,789.40 = 15,533.64/x
  3. Step 3: Cross multiply
    28,106.40x = 38,789.40 × 15,533.64
  4. Step 4: Simplify right side
    28,106.40x = 602,540,575.42
  5. Step 5: Solve for x
    x = 602,540,575.42/28,106.40
  6. Step 6: Final answer
    x = 21,437.84

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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.