Home / 15,802.30-21,807.12-9,087.61

Finding the Fourth Proportional to 15,802.30, 21,807.12 and 9,087.61

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Solution

The fourth proportional to 15,802.30, 21,807.12 and 9,087.61 is: 12,540.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,802.30 : 21,807.12 = 9,087.61 : x
  2. Step 2: Convert to fraction form
    15,802.30/21,807.12 = 9,087.61/x
  3. Step 3: Cross multiply
    15,802.30x = 21,807.12 × 9,087.61
  4. Step 4: Simplify right side
    15,802.30x = 198,174,601.78
  5. Step 5: Solve for x
    x = 198,174,601.78/15,802.30
  6. Step 6: Final answer
    x = 12,540.87

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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.