Home / 15,287.82-21,097.97-8,574.13

Finding the Fourth Proportional to 15,287.82, 21,097.97 and 8,574.13

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Solution

The fourth proportional to 15,287.82, 21,097.97 and 8,574.13 is: 11,832.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.82 : 21,097.97 = 8,574.13 : x
  2. Step 2: Convert to fraction form
    15,287.82/21,097.97 = 8,574.13/x
  3. Step 3: Cross multiply
    15,287.82x = 21,097.97 × 8,574.13
  4. Step 4: Simplify right side
    15,287.82x = 180,896,737.52
  5. Step 5: Solve for x
    x = 180,896,737.52/15,287.82
  6. Step 6: Final answer
    x = 11,832.74

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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.