Home / 15,913.16-21,959.30-8,839.13

Finding the Fourth Proportional to 15,913.16, 21,959.30 and 8,839.13

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Solution

The fourth proportional to 15,913.16, 21,959.30 and 8,839.13 is: 12,197.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.16 : 21,959.30 = 8,839.13 : x
  2. Step 2: Convert to fraction form
    15,913.16/21,959.30 = 8,839.13/x
  3. Step 3: Cross multiply
    15,913.16x = 21,959.30 × 8,839.13
  4. Step 4: Simplify right side
    15,913.16x = 194,101,019.71
  5. Step 5: Solve for x
    x = 194,101,019.71/15,913.16
  6. Step 6: Final answer
    x = 12,197.52

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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.