Home / 28,627.04-42,942-7,850.72

Finding the Fourth Proportional to 28,627.04, 42,942 and 7,850.72

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Solution

The fourth proportional to 28,627.04, 42,942 and 7,850.72 is: 11,776.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,627.04 : 42,942 = 7,850.72 : x
  2. Step 2: Convert to fraction form
    28,627.04/42,942 = 7,850.72/x
  3. Step 3: Cross multiply
    28,627.04x = 42,942 × 7,850.72
  4. Step 4: Simplify right side
    28,627.04x = 337,125,618.24
  5. Step 5: Solve for x
    x = 337,125,618.24/28,627.04
  6. Step 6: Final answer
    x = 11,776.47

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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.