Home / 15,505.69-21,397.38-8,791.93

Finding the Fourth Proportional to 15,505.69, 21,397.38 and 8,791.93

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Solution

The fourth proportional to 15,505.69, 21,397.38 and 8,791.93 is: 12,132.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.69 : 21,397.38 = 8,791.93 : x
  2. Step 2: Convert to fraction form
    15,505.69/21,397.38 = 8,791.93/x
  3. Step 3: Cross multiply
    15,505.69x = 21,397.38 × 8,791.93
  4. Step 4: Simplify right side
    15,505.69x = 188,124,267.14
  5. Step 5: Solve for x
    x = 188,124,267.14/15,505.69
  6. Step 6: Final answer
    x = 12,132.60

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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.