Home / 20,060.80-27,681.52-12,402.88

Finding the Fourth Proportional to 20,060.80, 27,681.52 and 12,402.88

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Solution

The fourth proportional to 20,060.80, 27,681.52 and 12,402.88 is: 17,114.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,060.80 : 27,681.52 = 12,402.88 : x
  2. Step 2: Convert to fraction form
    20,060.80/27,681.52 = 12,402.88/x
  3. Step 3: Cross multiply
    20,060.80x = 27,681.52 × 12,402.88
  4. Step 4: Simplify right side
    20,060.80x = 343,330,570.78
  5. Step 5: Solve for x
    x = 343,330,570.78/20,060.80
  6. Step 6: Final answer
    x = 17,114.50

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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.