Home / 21,302.76-29,397.22-11,871.08

Finding the Fourth Proportional to 21,302.76, 29,397.22 and 11,871.08

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Solution

The fourth proportional to 21,302.76, 29,397.22 and 11,871.08 is: 16,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.76 : 29,397.22 = 11,871.08 : x
  2. Step 2: Convert to fraction form
    21,302.76/29,397.22 = 11,871.08/x
  3. Step 3: Cross multiply
    21,302.76x = 29,397.22 × 11,871.08
  4. Step 4: Simplify right side
    21,302.76x = 348,976,750.40
  5. Step 5: Solve for x
    x = 348,976,750.40/21,302.76
  6. Step 6: Final answer
    x = 16,381.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.