Home / 42,617.50-63,926.58-18,918.68

Finding the Fourth Proportional to 42,617.50, 63,926.58 and 18,918.68

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Solution

The fourth proportional to 42,617.50, 63,926.58 and 18,918.68 is: 28,378.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,617.50 : 63,926.58 = 18,918.68 : x
  2. Step 2: Convert to fraction form
    42,617.50/63,926.58 = 18,918.68/x
  3. Step 3: Cross multiply
    42,617.50x = 63,926.58 × 18,918.68
  4. Step 4: Simplify right side
    42,617.50x = 1,209,406,155.41
  5. Step 5: Solve for x
    x = 1,209,406,155.41/42,617.50
  6. Step 6: Final answer
    x = 28,378.16

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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.