Home / 28,070.70-42,103.62-11,432.49

Finding the Fourth Proportional to 28,070.70, 42,103.62 and 11,432.49

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Solution

The fourth proportional to 28,070.70, 42,103.62 and 11,432.49 is: 17,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.70 : 42,103.62 = 11,432.49 : x
  2. Step 2: Convert to fraction form
    28,070.70/42,103.62 = 11,432.49/x
  3. Step 3: Cross multiply
    28,070.70x = 42,103.62 × 11,432.49
  4. Step 4: Simplify right side
    28,070.70x = 481,349,214.61
  5. Step 5: Solve for x
    x = 481,349,214.61/28,070.70
  6. Step 6: Final answer
    x = 17,147.75

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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.