Home / 11,381.52-15,698.79-9,886.83

Finding the Fourth Proportional to 11,381.52, 15,698.79 and 9,886.83

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Solution

The fourth proportional to 11,381.52, 15,698.79 and 9,886.83 is: 13,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,381.52 : 15,698.79 = 9,886.83 : x
  2. Step 2: Convert to fraction form
    11,381.52/15,698.79 = 9,886.83/x
  3. Step 3: Cross multiply
    11,381.52x = 15,698.79 × 9,886.83
  4. Step 4: Simplify right side
    11,381.52x = 155,211,267.94
  5. Step 5: Solve for x
    x = 155,211,267.94/11,381.52
  6. Step 6: Final answer
    x = 13,637.13

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Half scale
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Double scale
Find fourth proportional to 11,382.52, 15,700.17 and 9,887.83
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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.