Home / 15,862.32-21,890.00-9,489.18

Finding the Fourth Proportional to 15,862.32, 21,890.00 and 9,489.18

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Solution

The fourth proportional to 15,862.32, 21,890.00 and 9,489.18 is: 13,095.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,862.32 : 21,890.00 = 9,489.18 : x
  2. Step 2: Convert to fraction form
    15,862.32/21,890.00 = 9,489.18/x
  3. Step 3: Cross multiply
    15,862.32x = 21,890.00 × 9,489.18
  4. Step 4: Simplify right side
    15,862.32x = 207,718,077.99
  5. Step 5: Solve for x
    x = 207,718,077.99/15,862.32
  6. Step 6: Final answer
    x = 13,095.06

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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.