Home / 42,966.34-64,388.04-18,921.76

Finding the Fourth Proportional to 42,966.34, 64,388.04 and 18,921.76

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Solution

The fourth proportional to 42,966.34, 64,388.04 and 18,921.76 is: 28,355.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,966.34 : 64,388.04 = 18,921.76 : x
  2. Step 2: Convert to fraction form
    42,966.34/64,388.04 = 18,921.76/x
  3. Step 3: Cross multiply
    42,966.34x = 64,388.04 × 18,921.76
  4. Step 4: Simplify right side
    42,966.34x = 1,218,335,039.75
  5. Step 5: Solve for x
    x = 1,218,335,039.75/42,966.34
  6. Step 6: Final answer
    x = 28,355.57

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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.