Home / 20,602.28-28,430.64-12,532.94

Finding the Fourth Proportional to 20,602.28, 28,430.64 and 12,532.94

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Solution

The fourth proportional to 20,602.28, 28,430.64 and 12,532.94 is: 17,295.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.28 : 28,430.64 = 12,532.94 : x
  2. Step 2: Convert to fraction form
    20,602.28/28,430.64 = 12,532.94/x
  3. Step 3: Cross multiply
    20,602.28x = 28,430.64 × 12,532.94
  4. Step 4: Simplify right side
    20,602.28x = 356,319,505.28
  5. Step 5: Solve for x
    x = 356,319,505.28/20,602.28
  6. Step 6: Final answer
    x = 17,295.15

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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.