Home / 11,555.91-15,943.42-9,125.55

Finding the Fourth Proportional to 11,555.91, 15,943.42 and 9,125.55

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Solution

The fourth proportional to 11,555.91, 15,943.42 and 9,125.55 is: 12,590.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.91 : 15,943.42 = 9,125.55 : x
  2. Step 2: Convert to fraction form
    11,555.91/15,943.42 = 9,125.55/x
  3. Step 3: Cross multiply
    11,555.91x = 15,943.42 × 9,125.55
  4. Step 4: Simplify right side
    11,555.91x = 145,492,476.38
  5. Step 5: Solve for x
    x = 145,492,476.38/11,555.91
  6. Step 6: Final answer
    x = 12,590.31

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Half scale
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Double scale
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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.