Home / 42,815.60-64,228.20-13,233.20

Finding the Fourth Proportional to 42,815.60, 64,228.20 and 13,233.20

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Solution

The fourth proportional to 42,815.60, 64,228.20 and 13,233.20 is: 19,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,815.60 : 64,228.20 = 13,233.20 : x
  2. Step 2: Convert to fraction form
    42,815.60/64,228.20 = 13,233.20/x
  3. Step 3: Cross multiply
    42,815.60x = 64,228.20 × 13,233.20
  4. Step 4: Simplify right side
    42,815.60x = 849,944,616.24
  5. Step 5: Solve for x
    x = 849,944,616.24/42,815.60
  6. Step 6: Final answer
    x = 19,851.28

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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.