Home / 28,274.13-42,400.40-9,294.35

Finding the Fourth Proportional to 28,274.13, 42,400.40 and 9,294.35

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Solution

The fourth proportional to 28,274.13, 42,400.40 and 9,294.35 is: 13,937.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,274.13 : 42,400.40 = 9,294.35 : x
  2. Step 2: Convert to fraction form
    28,274.13/42,400.40 = 9,294.35/x
  3. Step 3: Cross multiply
    28,274.13x = 42,400.40 × 9,294.35
  4. Step 4: Simplify right side
    28,274.13x = 394,083,899.27
  5. Step 5: Solve for x
    x = 394,083,899.27/28,274.13
  6. Step 6: Final answer
    x = 13,937.97

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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.