Home / 20,294.91-28,010.24-12,742.32

Finding the Fourth Proportional to 20,294.91, 28,010.24 and 12,742.32

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Solution

The fourth proportional to 20,294.91, 28,010.24 and 12,742.32 is: 17,586.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,294.91 : 28,010.24 = 12,742.32 : x
  2. Step 2: Convert to fraction form
    20,294.91/28,010.24 = 12,742.32/x
  3. Step 3: Cross multiply
    20,294.91x = 28,010.24 × 12,742.32
  4. Step 4: Simplify right side
    20,294.91x = 356,915,441.36
  5. Step 5: Solve for x
    x = 356,915,441.36/20,294.91
  6. Step 6: Final answer
    x = 17,586.45

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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.