Home / 26,935.47-40,365.54-12,139.20

Finding the Fourth Proportional to 26,935.47, 40,365.54 and 12,139.20

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Solution

The fourth proportional to 26,935.47, 40,365.54 and 12,139.20 is: 18,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,935.47 : 40,365.54 = 12,139.20 : x
  2. Step 2: Convert to fraction form
    26,935.47/40,365.54 = 12,139.20/x
  3. Step 3: Cross multiply
    26,935.47x = 40,365.54 × 12,139.20
  4. Step 4: Simplify right side
    26,935.47x = 490,005,363.17
  5. Step 5: Solve for x
    x = 490,005,363.17/26,935.47
  6. Step 6: Final answer
    x = 18,191.83

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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.