Home / 21,292.30-31,937.37-8,143.66

Finding the Fourth Proportional to 21,292.30, 31,937.37 and 8,143.66

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Solution

The fourth proportional to 21,292.30, 31,937.37 and 8,143.66 is: 12,215.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.30 : 31,937.37 = 8,143.66 : x
  2. Step 2: Convert to fraction form
    21,292.30/31,937.37 = 8,143.66/x
  3. Step 3: Cross multiply
    21,292.30x = 31,937.37 × 8,143.66
  4. Step 4: Simplify right side
    21,292.30x = 260,087,082.57
  5. Step 5: Solve for x
    x = 260,087,082.57/21,292.30
  6. Step 6: Final answer
    x = 12,215.08

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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.