Home / 22,471.60-31,011.40-12,400.18

Finding the Fourth Proportional to 22,471.60, 31,011.40 and 12,400.18

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Solution

The fourth proportional to 22,471.60, 31,011.40 and 12,400.18 is: 17,112.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,471.60 : 31,011.40 = 12,400.18 : x
  2. Step 2: Convert to fraction form
    22,471.60/31,011.40 = 12,400.18/x
  3. Step 3: Cross multiply
    22,471.60x = 31,011.40 × 12,400.18
  4. Step 4: Simplify right side
    22,471.60x = 384,546,942.05
  5. Step 5: Solve for x
    x = 384,546,942.05/22,471.60
  6. Step 6: Final answer
    x = 17,112.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.