Home / 15,498.05-21,387.53-8,424.47

Finding the Fourth Proportional to 15,498.05, 21,387.53 and 8,424.47

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Solution

The fourth proportional to 15,498.05, 21,387.53 and 8,424.47 is: 11,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.05 : 21,387.53 = 8,424.47 : x
  2. Step 2: Convert to fraction form
    15,498.05/21,387.53 = 8,424.47/x
  3. Step 3: Cross multiply
    15,498.05x = 21,387.53 × 8,424.47
  4. Step 4: Simplify right side
    15,498.05x = 180,178,679.39
  5. Step 5: Solve for x
    x = 180,178,679.39/15,498.05
  6. Step 6: Final answer
    x = 11,625.90

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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.