Home / 42,871.26-64,315.05-15,188.70

Finding the Fourth Proportional to 42,871.26, 64,315.05 and 15,188.70

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Solution

The fourth proportional to 42,871.26, 64,315.05 and 15,188.70 is: 22,785.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,871.26 : 64,315.05 = 15,188.70 : x
  2. Step 2: Convert to fraction form
    42,871.26/64,315.05 = 15,188.70/x
  3. Step 3: Cross multiply
    42,871.26x = 64,315.05 × 15,188.70
  4. Step 4: Simplify right side
    42,871.26x = 976,861,999.94
  5. Step 5: Solve for x
    x = 976,861,999.94/42,871.26
  6. Step 6: Final answer
    x = 22,785.94

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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.