Home / 21,306.17-31,959.23-6,515.10

Finding the Fourth Proportional to 21,306.17, 31,959.23 and 6,515.10

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Solution

The fourth proportional to 21,306.17, 31,959.23 and 6,515.10 is: 9,772.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.17 : 31,959.23 = 6,515.10 : x
  2. Step 2: Convert to fraction form
    21,306.17/31,959.23 = 6,515.10/x
  3. Step 3: Cross multiply
    21,306.17x = 31,959.23 × 6,515.10
  4. Step 4: Simplify right side
    21,306.17x = 208,217,546.80
  5. Step 5: Solve for x
    x = 208,217,546.80/21,306.17
  6. Step 6: Final answer
    x = 9,772.64

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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.