Home / 15,507.59-21,397.07-8,791.68

Finding the Fourth Proportional to 15,507.59, 21,397.07 and 8,791.68

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Solution

The fourth proportional to 15,507.59, 21,397.07 and 8,791.68 is: 12,130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.59 : 21,397.07 = 8,791.68 : x
  2. Step 2: Convert to fraction form
    15,507.59/21,397.07 = 8,791.68/x
  3. Step 3: Cross multiply
    15,507.59x = 21,397.07 × 8,791.68
  4. Step 4: Simplify right side
    15,507.59x = 188,116,192.38
  5. Step 5: Solve for x
    x = 188,116,192.38/15,507.59
  6. Step 6: Final answer
    x = 12,130.59

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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.