Home / 42,209.40-63,314.10-18,881.40

Finding the Fourth Proportional to 42,209.40, 63,314.10 and 18,881.40

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Solution

The fourth proportional to 42,209.40, 63,314.10 and 18,881.40 is: 28,322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,209.40 : 63,314.10 = 18,881.40 : x
  2. Step 2: Convert to fraction form
    42,209.40/63,314.10 = 18,881.40/x
  3. Step 3: Cross multiply
    42,209.40x = 63,314.10 × 18,881.40
  4. Step 4: Simplify right side
    42,209.40x = 1,195,458,847.74
  5. Step 5: Solve for x
    x = 1,195,458,847.74/42,209.40
  6. Step 6: Final answer
    x = 28,322.10

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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.