Home / 42,989.92-64,464.18-18,023.28

Finding the Fourth Proportional to 42,989.92, 64,464.18 and 18,023.28

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Solution

The fourth proportional to 42,989.92, 64,464.18 and 18,023.28 is: 27,026.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,989.92 : 64,464.18 = 18,023.28 : x
  2. Step 2: Convert to fraction form
    42,989.92/64,464.18 = 18,023.28/x
  3. Step 3: Cross multiply
    42,989.92x = 64,464.18 × 18,023.28
  4. Step 4: Simplify right side
    42,989.92x = 1,161,855,966.11
  5. Step 5: Solve for x
    x = 1,161,855,966.11/42,989.92
  6. Step 6: Final answer
    x = 27,026.24

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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.