Home / 28,688.10-43,032.15-8,972.70

Finding the Fourth Proportional to 28,688.10, 43,032.15 and 8,972.70

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Solution

The fourth proportional to 28,688.10, 43,032.15 and 8,972.70 is: 13,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688.10 : 43,032.15 = 8,972.70 : x
  2. Step 2: Convert to fraction form
    28,688.10/43,032.15 = 8,972.70/x
  3. Step 3: Cross multiply
    28,688.10x = 43,032.15 × 8,972.70
  4. Step 4: Simplify right side
    28,688.10x = 386,114,572.31
  5. Step 5: Solve for x
    x = 386,114,572.31/28,688.10
  6. Step 6: Final answer
    x = 13,459.05

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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.