Home / 21,312.11-31,968.17-6,521.31

Finding the Fourth Proportional to 21,312.11, 31,968.17 and 6,521.31

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Solution

The fourth proportional to 21,312.11, 31,968.17 and 6,521.31 is: 9,781.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.11 : 31,968.17 = 6,521.31 : x
  2. Step 2: Convert to fraction form
    21,312.11/31,968.17 = 6,521.31/x
  3. Step 3: Cross multiply
    21,312.11x = 31,968.17 × 6,521.31
  4. Step 4: Simplify right side
    21,312.11x = 208,474,338.55
  5. Step 5: Solve for x
    x = 208,474,338.55/21,312.11
  6. Step 6: Final answer
    x = 9,781.97

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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.