Home / 15,419.94-21,279.68-8,346.52

Finding the Fourth Proportional to 15,419.94, 21,279.68 and 8,346.52

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Solution

The fourth proportional to 15,419.94, 21,279.68 and 8,346.52 is: 11,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.94 : 21,279.68 = 8,346.52 : x
  2. Step 2: Convert to fraction form
    15,419.94/21,279.68 = 8,346.52/x
  3. Step 3: Cross multiply
    15,419.94x = 21,279.68 × 8,346.52
  4. Step 4: Simplify right side
    15,419.94x = 177,611,274.71
  5. Step 5: Solve for x
    x = 177,611,274.71/15,419.94
  6. Step 6: Final answer
    x = 11,518.29

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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.