Home / 28,071.56-38,731.74-16,138.28

Finding the Fourth Proportional to 28,071.56, 38,731.74 and 16,138.28

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Solution

The fourth proportional to 28,071.56, 38,731.74 and 16,138.28 is: 22,266.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.56 : 38,731.74 = 16,138.28 : x
  2. Step 2: Convert to fraction form
    28,071.56/38,731.74 = 16,138.28/x
  3. Step 3: Cross multiply
    28,071.56x = 38,731.74 × 16,138.28
  4. Step 4: Simplify right side
    28,071.56x = 625,063,665.01
  5. Step 5: Solve for x
    x = 625,063,665.01/28,071.56
  6. Step 6: Final answer
    x = 22,266.79

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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.