Home / 18,432.79-25,431.40-10,881.72

Finding the Fourth Proportional to 18,432.79, 25,431.40 and 10,881.72

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Solution

The fourth proportional to 18,432.79, 25,431.40 and 10,881.72 is: 15,013.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,432.79 : 25,431.40 = 10,881.72 : x
  2. Step 2: Convert to fraction form
    18,432.79/25,431.40 = 10,881.72/x
  3. Step 3: Cross multiply
    18,432.79x = 25,431.40 × 10,881.72
  4. Step 4: Simplify right side
    18,432.79x = 276,737,374.01
  5. Step 5: Solve for x
    x = 276,737,374.01/18,432.79
  6. Step 6: Final answer
    x = 15,013.32

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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.