Home / 20,718.95-28,584.65-13,552.95

Finding the Fourth Proportional to 20,718.95, 28,584.65 and 13,552.95

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Solution

The fourth proportional to 20,718.95, 28,584.65 and 13,552.95 is: 18,698.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.95 : 28,584.65 = 13,552.95 : x
  2. Step 2: Convert to fraction form
    20,718.95/28,584.65 = 13,552.95/x
  3. Step 3: Cross multiply
    20,718.95x = 28,584.65 × 13,552.95
  4. Step 4: Simplify right side
    20,718.95x = 387,406,318.05
  5. Step 5: Solve for x
    x = 387,406,318.05/20,718.95
  6. Step 6: Final answer
    x = 18,698.17

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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.