Home / 20,565.49-28,380.16-11,612.46

Finding the Fourth Proportional to 20,565.49, 28,380.16 and 11,612.46

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Solution

The fourth proportional to 20,565.49, 28,380.16 and 11,612.46 is: 16,025.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.49 : 28,380.16 = 11,612.46 : x
  2. Step 2: Convert to fraction form
    20,565.49/28,380.16 = 11,612.46/x
  3. Step 3: Cross multiply
    20,565.49x = 28,380.16 × 11,612.46
  4. Step 4: Simplify right side
    20,565.49x = 329,563,472.79
  5. Step 5: Solve for x
    x = 329,563,472.79/20,565.49
  6. Step 6: Final answer
    x = 16,025.07

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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.