Home / 19,988.44-27,601.80-12,447.70

Finding the Fourth Proportional to 19,988.44, 27,601.80 and 12,447.70

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Solution

The fourth proportional to 19,988.44, 27,601.80 and 12,447.70 is: 17,188.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.44 : 27,601.80 = 12,447.70 : x
  2. Step 2: Convert to fraction form
    19,988.44/27,601.80 = 12,447.70/x
  3. Step 3: Cross multiply
    19,988.44x = 27,601.80 × 12,447.70
  4. Step 4: Simplify right side
    19,988.44x = 343,578,925.86
  5. Step 5: Solve for x
    x = 343,578,925.86/19,988.44
  6. Step 6: Final answer
    x = 17,188.88

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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.