Home / 20,995.47-28,964.38-14,187.29

Finding the Fourth Proportional to 20,995.47, 28,964.38 and 14,187.29

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Solution

The fourth proportional to 20,995.47, 28,964.38 and 14,187.29 is: 19,572.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.47 : 28,964.38 = 14,187.29 : x
  2. Step 2: Convert to fraction form
    20,995.47/28,964.38 = 14,187.29/x
  3. Step 3: Cross multiply
    20,995.47x = 28,964.38 × 14,187.29
  4. Step 4: Simplify right side
    20,995.47x = 410,926,058.73
  5. Step 5: Solve for x
    x = 410,926,058.73/20,995.47
  6. Step 6: Final answer
    x = 19,572.13

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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.