Home / 42,311.74-63,467.46-18,921.76

Finding the Fourth Proportional to 42,311.74, 63,467.46 and 18,921.76

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Solution

The fourth proportional to 42,311.74, 63,467.46 and 18,921.76 is: 28,382.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,311.74 : 63,467.46 = 18,921.76 : x
  2. Step 2: Convert to fraction form
    42,311.74/63,467.46 = 18,921.76/x
  3. Step 3: Cross multiply
    42,311.74x = 63,467.46 × 18,921.76
  4. Step 4: Simplify right side
    42,311.74x = 1,200,916,045.93
  5. Step 5: Solve for x
    x = 1,200,916,045.93/42,311.74
  6. Step 6: Final answer
    x = 28,382.57

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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.