Home / 21,549.39-29,734.70-12,117.39

Finding the Fourth Proportional to 21,549.39, 29,734.70 and 12,117.39

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Solution

The fourth proportional to 21,549.39, 29,734.70 and 12,117.39 is: 16,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.39 : 29,734.70 = 12,117.39 : x
  2. Step 2: Convert to fraction form
    21,549.39/29,734.70 = 12,117.39/x
  3. Step 3: Cross multiply
    21,549.39x = 29,734.70 × 12,117.39
  4. Step 4: Simplify right side
    21,549.39x = 360,306,895.85
  5. Step 5: Solve for x
    x = 360,306,895.85/21,549.39
  6. Step 6: Final answer
    x = 16,720.05

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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.