Home / 42,279.76-63,426.93-18,908.02

Finding the Fourth Proportional to 42,279.76, 63,426.93 and 18,908.02

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Solution

The fourth proportional to 42,279.76, 63,426.93 and 18,908.02 is: 28,365.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,279.76 : 63,426.93 = 18,908.02 : x
  2. Step 2: Convert to fraction form
    42,279.76/63,426.93 = 18,908.02/x
  3. Step 3: Cross multiply
    42,279.76x = 63,426.93 × 18,908.02
  4. Step 4: Simplify right side
    42,279.76x = 1,199,277,660.98
  5. Step 5: Solve for x
    x = 1,199,277,660.98/42,279.76
  6. Step 6: Final answer
    x = 28,365.29

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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.