Home / 28,110.10-42,167.55-9,642.10

Finding the Fourth Proportional to 28,110.10, 42,167.55 and 9,642.10

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Solution

The fourth proportional to 28,110.10, 42,167.55 and 9,642.10 is: 14,463.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.10 : 42,167.55 = 9,642.10 : x
  2. Step 2: Convert to fraction form
    28,110.10/42,167.55 = 9,642.10/x
  3. Step 3: Cross multiply
    28,110.10x = 42,167.55 × 9,642.10
  4. Step 4: Simplify right side
    28,110.10x = 406,583,733.86
  5. Step 5: Solve for x
    x = 406,583,733.86/28,110.10
  6. Step 6: Final answer
    x = 14,463.97

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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.