Home / 35,815.17-53,648.92-20,979.10

Finding the Fourth Proportional to 35,815.17, 53,648.92 and 20,979.10

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Solution

The fourth proportional to 35,815.17, 53,648.92 and 20,979.10 is: 31,425.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,815.17 : 53,648.92 = 20,979.10 : x
  2. Step 2: Convert to fraction form
    35,815.17/53,648.92 = 20,979.10/x
  3. Step 3: Cross multiply
    35,815.17x = 53,648.92 × 20,979.10
  4. Step 4: Simplify right side
    35,815.17x = 1,125,506,057.57
  5. Step 5: Solve for x
    x = 1,125,506,057.57/35,815.17
  6. Step 6: Final answer
    x = 31,425.40

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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.