Home / 28,512.78-42,756.93-9,794.70

Finding the Fourth Proportional to 28,512.78, 42,756.93 and 9,794.70

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Solution

The fourth proportional to 28,512.78, 42,756.93 and 9,794.70 is: 14,687.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.78 : 42,756.93 = 9,794.70 : x
  2. Step 2: Convert to fraction form
    28,512.78/42,756.93 = 9,794.70/x
  3. Step 3: Cross multiply
    28,512.78x = 42,756.93 × 9,794.70
  4. Step 4: Simplify right side
    28,512.78x = 418,791,302.27
  5. Step 5: Solve for x
    x = 418,791,302.27/28,512.78
  6. Step 6: Final answer
    x = 14,687.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.