Home / 20,564.55-28,378.85-11,612.43

Finding the Fourth Proportional to 20,564.55, 28,378.85 and 11,612.43

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Solution

The fourth proportional to 20,564.55, 28,378.85 and 11,612.43 is: 16,025.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.55 : 28,378.85 = 11,612.43 : x
  2. Step 2: Convert to fraction form
    20,564.55/28,378.85 = 11,612.43/x
  3. Step 3: Cross multiply
    20,564.55x = 28,378.85 × 11,612.43
  4. Step 4: Simplify right side
    20,564.55x = 329,547,351.04
  5. Step 5: Solve for x
    x = 329,547,351.04/20,564.55
  6. Step 6: Final answer
    x = 16,025.02

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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.