Home / 15,278.53-21,085.41-8,564.62

Finding the Fourth Proportional to 15,278.53, 21,085.41 and 8,564.62

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Solution

The fourth proportional to 15,278.53, 21,085.41 and 8,564.62 is: 11,819.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.53 : 21,085.41 = 8,564.62 : x
  2. Step 2: Convert to fraction form
    15,278.53/21,085.41 = 8,564.62/x
  3. Step 3: Cross multiply
    15,278.53x = 21,085.41 × 8,564.62
  4. Step 4: Simplify right side
    15,278.53x = 180,588,524.19
  5. Step 5: Solve for x
    x = 180,588,524.19/15,278.53
  6. Step 6: Final answer
    x = 11,819.76

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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.