Home / 15,478.94-21,357.60-8,764.04

Finding the Fourth Proportional to 15,478.94, 21,357.60 and 8,764.04

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Solution

The fourth proportional to 15,478.94, 21,357.60 and 8,764.04 is: 12,092.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.94 : 21,357.60 = 8,764.04 : x
  2. Step 2: Convert to fraction form
    15,478.94/21,357.60 = 8,764.04/x
  3. Step 3: Cross multiply
    15,478.94x = 21,357.60 × 8,764.04
  4. Step 4: Simplify right side
    15,478.94x = 187,178,860.70
  5. Step 5: Solve for x
    x = 187,178,860.70/15,478.94
  6. Step 6: Final answer
    x = 12,092.49

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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.