Home / 42,406.79-63,551.34-18,678.76

Finding the Fourth Proportional to 42,406.79, 63,551.34 and 18,678.76

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Solution

The fourth proportional to 42,406.79, 63,551.34 and 18,678.76 is: 27,992.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,406.79 : 63,551.34 = 18,678.76 : x
  2. Step 2: Convert to fraction form
    42,406.79/63,551.34 = 18,678.76/x
  3. Step 3: Cross multiply
    42,406.79x = 63,551.34 × 18,678.76
  4. Step 4: Simplify right side
    42,406.79x = 1,187,060,068.66
  5. Step 5: Solve for x
    x = 1,187,060,068.66/42,406.79
  6. Step 6: Final answer
    x = 27,992.22

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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.