Home / 21,013.76-31,512.96-10,618.24

Finding the Fourth Proportional to 21,013.76, 31,512.96 and 10,618.24

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Solution

The fourth proportional to 21,013.76, 31,512.96 and 10,618.24 is: 15,923.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.76 : 31,512.96 = 10,618.24 : x
  2. Step 2: Convert to fraction form
    21,013.76/31,512.96 = 10,618.24/x
  3. Step 3: Cross multiply
    21,013.76x = 31,512.96 × 10,618.24
  4. Step 4: Simplify right side
    21,013.76x = 334,612,172.39
  5. Step 5: Solve for x
    x = 334,612,172.39/21,013.76
  6. Step 6: Final answer
    x = 15,923.48

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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.