Home / 20,443.19-28,185.57-13,718.16

Finding the Fourth Proportional to 20,443.19, 28,185.57 and 13,718.16

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Solution

The fourth proportional to 20,443.19, 28,185.57 and 13,718.16 is: 18,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.19 : 28,185.57 = 13,718.16 : x
  2. Step 2: Convert to fraction form
    20,443.19/28,185.57 = 13,718.16/x
  3. Step 3: Cross multiply
    20,443.19x = 28,185.57 × 13,718.16
  4. Step 4: Simplify right side
    20,443.19x = 386,654,158.95
  5. Step 5: Solve for x
    x = 386,654,158.95/20,443.19
  6. Step 6: Final answer
    x = 18,913.60

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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.