Home / 11,937.50-16,456.65-8,389.70

Finding the Fourth Proportional to 11,937.50, 16,456.65 and 8,389.70

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Solution

The fourth proportional to 11,937.50, 16,456.65 and 8,389.70 is: 11,565.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,937.50 : 16,456.65 = 8,389.70 : x
  2. Step 2: Convert to fraction form
    11,937.50/16,456.65 = 8,389.70/x
  3. Step 3: Cross multiply
    11,937.50x = 16,456.65 × 8,389.70
  4. Step 4: Simplify right side
    11,937.50x = 138,066,366.19
  5. Step 5: Solve for x
    x = 138,066,366.19/11,937.50
  6. Step 6: Final answer
    x = 11,565.77

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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.