Home / 42,478.02-63,717.03-12,895.74

Finding the Fourth Proportional to 42,478.02, 63,717.03 and 12,895.74

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Solution

The fourth proportional to 42,478.02, 63,717.03 and 12,895.74 is: 19,343.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,478.02 : 63,717.03 = 12,895.74 : x
  2. Step 2: Convert to fraction form
    42,478.02/63,717.03 = 12,895.74/x
  3. Step 3: Cross multiply
    42,478.02x = 63,717.03 × 12,895.74
  4. Step 4: Simplify right side
    42,478.02x = 821,678,252.45
  5. Step 5: Solve for x
    x = 821,678,252.45/42,478.02
  6. Step 6: Final answer
    x = 19,343.61

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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.