Home / 20,657.82-28,521.27-14,385.18

Finding the Fourth Proportional to 20,657.82, 28,521.27 and 14,385.18

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Solution

The fourth proportional to 20,657.82, 28,521.27 and 14,385.18 is: 19,860.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.82 : 28,521.27 = 14,385.18 : x
  2. Step 2: Convert to fraction form
    20,657.82/28,521.27 = 14,385.18/x
  3. Step 3: Cross multiply
    20,657.82x = 28,521.27 × 14,385.18
  4. Step 4: Simplify right side
    20,657.82x = 410,283,602.78
  5. Step 5: Solve for x
    x = 410,283,602.78/20,657.82
  6. Step 6: Final answer
    x = 19,860.93

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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.