Home / 15,388.85-21,226.05-9,423.47

Finding the Fourth Proportional to 15,388.85, 21,226.05 and 9,423.47

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Solution

The fourth proportional to 15,388.85, 21,226.05 and 9,423.47 is: 12,997.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.85 : 21,226.05 = 9,423.47 : x
  2. Step 2: Convert to fraction form
    15,388.85/21,226.05 = 9,423.47/x
  3. Step 3: Cross multiply
    15,388.85x = 21,226.05 × 9,423.47
  4. Step 4: Simplify right side
    15,388.85x = 200,023,045.39
  5. Step 5: Solve for x
    x = 200,023,045.39/15,388.85
  6. Step 6: Final answer
    x = 12,997.92

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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.