Home / 28,612.74-42,911.32-11,970.08

Finding the Fourth Proportional to 28,612.74, 42,911.32 and 11,970.08

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Solution

The fourth proportional to 28,612.74, 42,911.32 and 11,970.08 is: 17,951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,612.74 : 42,911.32 = 11,970.08 : x
  2. Step 2: Convert to fraction form
    28,612.74/42,911.32 = 11,970.08/x
  3. Step 3: Cross multiply
    28,612.74x = 42,911.32 × 11,970.08
  4. Step 4: Simplify right side
    28,612.74x = 513,651,658.90
  5. Step 5: Solve for x
    x = 513,651,658.90/28,612.74
  6. Step 6: Final answer
    x = 17,951.85

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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.