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Finding the Fourth Proportional to 28,860.80, 43,230.72 and 14,967.68

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Solution

The fourth proportional to 28,860.80, 43,230.72 and 14,967.68 is: 22,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.80 : 43,230.72 = 14,967.68 : x
  2. Step 2: Convert to fraction form
    28,860.80/43,230.72 = 14,967.68/x
  3. Step 3: Cross multiply
    28,860.80x = 43,230.72 × 14,967.68
  4. Step 4: Simplify right side
    28,860.80x = 647,063,583.13
  5. Step 5: Solve for x
    x = 647,063,583.13/28,860.80
  6. Step 6: Final answer
    x = 22,420.15

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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.