Home / 20,657.16-28,540.28-14,397.48

Finding the Fourth Proportional to 20,657.16, 28,540.28 and 14,397.48

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Solution

The fourth proportional to 20,657.16, 28,540.28 and 14,397.48 is: 19,891.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.16 : 28,540.28 = 14,397.48 : x
  2. Step 2: Convert to fraction form
    20,657.16/28,540.28 = 14,397.48/x
  3. Step 3: Cross multiply
    20,657.16x = 28,540.28 × 14,397.48
  4. Step 4: Simplify right side
    20,657.16x = 410,908,110.49
  5. Step 5: Solve for x
    x = 410,908,110.49/20,657.16
  6. Step 6: Final answer
    x = 19,891.80

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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.