Home / 17,678.91-24,397.20-9,721.47

Finding the Fourth Proportional to 17,678.91, 24,397.20 and 9,721.47

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Solution

The fourth proportional to 17,678.91, 24,397.20 and 9,721.47 is: 13,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,678.91 : 24,397.20 = 9,721.47 : x
  2. Step 2: Convert to fraction form
    17,678.91/24,397.20 = 9,721.47/x
  3. Step 3: Cross multiply
    17,678.91x = 24,397.20 × 9,721.47
  4. Step 4: Simplify right side
    17,678.91x = 237,176,647.88
  5. Step 5: Solve for x
    x = 237,176,647.88/17,678.91
  6. Step 6: Final answer
    x = 13,415.80

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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.