Home / 15,085.12-20,812.80-8,793.04

Finding the Fourth Proportional to 15,085.12, 20,812.80 and 8,793.04

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Solution

The fourth proportional to 15,085.12, 20,812.80 and 8,793.04 is: 12,131.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.12 : 20,812.80 = 8,793.04 : x
  2. Step 2: Convert to fraction form
    15,085.12/20,812.80 = 8,793.04/x
  3. Step 3: Cross multiply
    15,085.12x = 20,812.80 × 8,793.04
  4. Step 4: Simplify right side
    15,085.12x = 183,007,782.91
  5. Step 5: Solve for x
    x = 183,007,782.91/15,085.12
  6. Step 6: Final answer
    x = 12,131.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.