Home / 23,121.45-31,904.01-13,560.57

Finding the Fourth Proportional to 23,121.45, 31,904.01 and 13,560.57

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Solution

The fourth proportional to 23,121.45, 31,904.01 and 13,560.57 is: 18,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.45 : 31,904.01 = 13,560.57 : x
  2. Step 2: Convert to fraction form
    23,121.45/31,904.01 = 13,560.57/x
  3. Step 3: Cross multiply
    23,121.45x = 31,904.01 × 13,560.57
  4. Step 4: Simplify right side
    23,121.45x = 432,636,560.89
  5. Step 5: Solve for x
    x = 432,636,560.89/23,121.45
  6. Step 6: Final answer
    x = 18,711.48

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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.