Home / 28,722.18-43,083.28-9,000.74

Finding the Fourth Proportional to 28,722.18, 43,083.28 and 9,000.74

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Solution

The fourth proportional to 28,722.18, 43,083.28 and 9,000.74 is: 13,501.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722.18 : 43,083.28 = 9,000.74 : x
  2. Step 2: Convert to fraction form
    28,722.18/43,083.28 = 9,000.74/x
  3. Step 3: Cross multiply
    28,722.18x = 43,083.28 × 9,000.74
  4. Step 4: Simplify right side
    28,722.18x = 387,781,401.63
  5. Step 5: Solve for x
    x = 387,781,401.63/28,722.18
  6. Step 6: Final answer
    x = 13,501.11

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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.