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Finding the Fourth Proportional to 28,044.11, 42,057.06 and 9,319.11

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Solution

The fourth proportional to 28,044.11, 42,057.06 and 9,319.11 is: 13,975.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,044.11 : 42,057.06 = 9,319.11 : x
  2. Step 2: Convert to fraction form
    28,044.11/42,057.06 = 9,319.11/x
  3. Step 3: Cross multiply
    28,044.11x = 42,057.06 × 9,319.11
  4. Step 4: Simplify right side
    28,044.11x = 391,934,368.42
  5. Step 5: Solve for x
    x = 391,934,368.42/28,044.11
  6. Step 6: Final answer
    x = 13,975.64

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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.