Home / 27,138.60-40,688.70-10,492.20

Finding the Fourth Proportional to 27,138.60, 40,688.70 and 10,492.20

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Solution

The fourth proportional to 27,138.60, 40,688.70 and 10,492.20 is: 15,730.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,138.60 : 40,688.70 = 10,492.20 : x
  2. Step 2: Convert to fraction form
    27,138.60/40,688.70 = 10,492.20/x
  3. Step 3: Cross multiply
    27,138.60x = 40,688.70 × 10,492.20
  4. Step 4: Simplify right side
    27,138.60x = 426,913,978.14
  5. Step 5: Solve for x
    x = 426,913,978.14/27,138.60
  6. Step 6: Final answer
    x = 15,730.88

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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.