Home / 28,519.04-39,364.70-18,447.90

Finding the Fourth Proportional to 28,519.04, 39,364.70 and 18,447.90

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Solution

The fourth proportional to 28,519.04, 39,364.70 and 18,447.90 is: 25,463.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.04 : 39,364.70 = 18,447.90 : x
  2. Step 2: Convert to fraction form
    28,519.04/39,364.70 = 18,447.90/x
  3. Step 3: Cross multiply
    28,519.04x = 39,364.70 × 18,447.90
  4. Step 4: Simplify right side
    28,519.04x = 726,195,956.89
  5. Step 5: Solve for x
    x = 726,195,956.89/28,519.04
  6. Step 6: Final answer
    x = 25,463.55

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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.