Home / 47,907.38-71,869.75-19,812.20

Finding the Fourth Proportional to 47,907.38, 71,869.75 and 19,812.20

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Solution

The fourth proportional to 47,907.38, 71,869.75 and 19,812.20 is: 29,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,907.38 : 71,869.75 = 19,812.20 : x
  2. Step 2: Convert to fraction form
    47,907.38/71,869.75 = 19,812.20/x
  3. Step 3: Cross multiply
    47,907.38x = 71,869.75 × 19,812.20
  4. Step 4: Simplify right side
    47,907.38x = 1,423,897,452.07
  5. Step 5: Solve for x
    x = 1,423,897,452.07/47,907.38
  6. Step 6: Final answer
    x = 29,721.88

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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.