Home / 42,531.48-63,811.53-18,835.74

Finding the Fourth Proportional to 42,531.48, 63,811.53 and 18,835.74

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Solution

The fourth proportional to 42,531.48, 63,811.53 and 18,835.74 is: 28,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,531.48 : 63,811.53 = 18,835.74 : x
  2. Step 2: Convert to fraction form
    42,531.48/63,811.53 = 18,835.74/x
  3. Step 3: Cross multiply
    42,531.48x = 63,811.53 × 18,835.74
  4. Step 4: Simplify right side
    42,531.48x = 1,201,937,388.08
  5. Step 5: Solve for x
    x = 1,201,937,388.08/42,531.48
  6. Step 6: Final answer
    x = 28,259.95

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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.