Home / 21,302.10-31,952.85-9,615.30

Finding the Fourth Proportional to 21,302.10, 31,952.85 and 9,615.30

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Solution

The fourth proportional to 21,302.10, 31,952.85 and 9,615.30 is: 14,422.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.10 : 31,952.85 = 9,615.30 : x
  2. Step 2: Convert to fraction form
    21,302.10/31,952.85 = 9,615.30/x
  3. Step 3: Cross multiply
    21,302.10x = 31,952.85 × 9,615.30
  4. Step 4: Simplify right side
    21,302.10x = 307,236,238.61
  5. Step 5: Solve for x
    x = 307,236,238.61/21,302.10
  6. Step 6: Final answer
    x = 14,422.81

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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.