Home / 21,952.08-30,293.92-12,520.40

Finding the Fourth Proportional to 21,952.08, 30,293.92 and 12,520.40

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Solution

The fourth proportional to 21,952.08, 30,293.92 and 12,520.40 is: 17,278.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952.08 : 30,293.92 = 12,520.40 : x
  2. Step 2: Convert to fraction form
    21,952.08/30,293.92 = 12,520.40/x
  3. Step 3: Cross multiply
    21,952.08x = 30,293.92 × 12,520.40
  4. Step 4: Simplify right side
    21,952.08x = 379,291,995.97
  5. Step 5: Solve for x
    x = 379,291,995.97/21,952.08
  6. Step 6: Final answer
    x = 17,278.18

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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.