Home / 19,930.79-29,840.30-10,549.61

Finding the Fourth Proportional to 19,930.79, 29,840.30 and 10,549.61

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Solution

The fourth proportional to 19,930.79, 29,840.30 and 10,549.61 is: 15,794.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.79 : 29,840.30 = 10,549.61 : x
  2. Step 2: Convert to fraction form
    19,930.79/29,840.30 = 10,549.61/x
  3. Step 3: Cross multiply
    19,930.79x = 29,840.30 × 10,549.61
  4. Step 4: Simplify right side
    19,930.79x = 314,803,476.80
  5. Step 5: Solve for x
    x = 314,803,476.80/19,930.79
  6. Step 6: Final answer
    x = 15,794.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.