Home / 28,124.80-42,187.20-11,473.90

Finding the Fourth Proportional to 28,124.80, 42,187.20 and 11,473.90

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Solution

The fourth proportional to 28,124.80, 42,187.20 and 11,473.90 is: 17,210.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,124.80 : 42,187.20 = 11,473.90 : x
  2. Step 2: Convert to fraction form
    28,124.80/42,187.20 = 11,473.90/x
  3. Step 3: Cross multiply
    28,124.80x = 42,187.20 × 11,473.90
  4. Step 4: Simplify right side
    28,124.80x = 484,051,714.08
  5. Step 5: Solve for x
    x = 484,051,714.08/28,124.80
  6. Step 6: Final answer
    x = 17,210.85

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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.