Home / 11,382.16-15,701.10-7,139.44

Finding the Fourth Proportional to 11,382.16, 15,701.10 and 7,139.44

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Solution

The fourth proportional to 11,382.16, 15,701.10 and 7,139.44 is: 9,848.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,382.16 : 15,701.10 = 7,139.44 : x
  2. Step 2: Convert to fraction form
    11,382.16/15,701.10 = 7,139.44/x
  3. Step 3: Cross multiply
    11,382.16x = 15,701.10 × 7,139.44
  4. Step 4: Simplify right side
    11,382.16x = 112,097,061.38
  5. Step 5: Solve for x
    x = 112,097,061.38/11,382.16
  6. Step 6: Final answer
    x = 9,848.49

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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.