Home / 42,215.84-63,272.88-18,815.52

Finding the Fourth Proportional to 42,215.84, 63,272.88 and 18,815.52

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Solution

The fourth proportional to 42,215.84, 63,272.88 and 18,815.52 is: 28,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,215.84 : 63,272.88 = 18,815.52 : x
  2. Step 2: Convert to fraction form
    42,215.84/63,272.88 = 18,815.52/x
  3. Step 3: Cross multiply
    42,215.84x = 63,272.88 × 18,815.52
  4. Step 4: Simplify right side
    42,215.84x = 1,190,512,139.10
  5. Step 5: Solve for x
    x = 1,190,512,139.10/42,215.84
  6. Step 6: Final answer
    x = 28,200.60

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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.