Home / 15,862.08-21,889.66-9,147.61

Finding the Fourth Proportional to 15,862.08, 21,889.66 and 9,147.61

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Solution

The fourth proportional to 15,862.08, 21,889.66 and 9,147.61 is: 12,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,862.08 : 21,889.66 = 9,147.61 : x
  2. Step 2: Convert to fraction form
    15,862.08/21,889.66 = 9,147.61/x
  3. Step 3: Cross multiply
    15,862.08x = 21,889.66 × 9,147.61
  4. Step 4: Simplify right side
    15,862.08x = 200,238,072.71
  5. Step 5: Solve for x
    x = 200,238,072.71/15,862.08
  6. Step 6: Final answer
    x = 12,623.70

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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.