Home / 23,128.20-31,938.30-18,446.40

Finding the Fourth Proportional to 23,128.20, 31,938.30 and 18,446.40

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Solution

The fourth proportional to 23,128.20, 31,938.30 and 18,446.40 is: 25,473.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.20 : 31,938.30 = 18,446.40 : x
  2. Step 2: Convert to fraction form
    23,128.20/31,938.30 = 18,446.40/x
  3. Step 3: Cross multiply
    23,128.20x = 31,938.30 × 18,446.40
  4. Step 4: Simplify right side
    23,128.20x = 589,146,657.12
  5. Step 5: Solve for x
    x = 589,146,657.12/23,128.20
  6. Step 6: Final answer
    x = 25,473.09

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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.