Home / 42,531.12-63,794.10-18,831.76

Finding the Fourth Proportional to 42,531.12, 63,794.10 and 18,831.76

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Solution

The fourth proportional to 42,531.12, 63,794.10 and 18,831.76 is: 28,246.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,531.12 : 63,794.10 = 18,831.76 : x
  2. Step 2: Convert to fraction form
    42,531.12/63,794.10 = 18,831.76/x
  3. Step 3: Cross multiply
    42,531.12x = 63,794.10 × 18,831.76
  4. Step 4: Simplify right side
    42,531.12x = 1,201,355,180.62
  5. Step 5: Solve for x
    x = 1,201,355,180.62/42,531.12
  6. Step 6: Final answer
    x = 28,246.50

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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.