Home / 15,377.70-21,213.45-11,839.62

Finding the Fourth Proportional to 15,377.70, 21,213.45 and 11,839.62

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Solution

The fourth proportional to 15,377.70, 21,213.45 and 11,839.62 is: 16,332.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.70 : 21,213.45 = 11,839.62 : x
  2. Step 2: Convert to fraction form
    15,377.70/21,213.45 = 11,839.62/x
  3. Step 3: Cross multiply
    15,377.70x = 21,213.45 × 11,839.62
  4. Step 4: Simplify right side
    15,377.70x = 251,159,186.89
  5. Step 5: Solve for x
    x = 251,159,186.89/15,377.70
  6. Step 6: Final answer
    x = 16,332.69

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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.