Home / 21,733.75-29,988.22-13,230.16

Finding the Fourth Proportional to 21,733.75, 29,988.22 and 13,230.16

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Solution

The fourth proportional to 21,733.75, 29,988.22 and 13,230.16 is: 18,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,733.75 : 29,988.22 = 13,230.16 : x
  2. Step 2: Convert to fraction form
    21,733.75/29,988.22 = 13,230.16/x
  3. Step 3: Cross multiply
    21,733.75x = 29,988.22 × 13,230.16
  4. Step 4: Simplify right side
    21,733.75x = 396,748,948.72
  5. Step 5: Solve for x
    x = 396,748,948.72/21,733.75
  6. Step 6: Final answer
    x = 18,254.97

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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.