Home / 15,521.60-21,419.18-8,448.02

Finding the Fourth Proportional to 15,521.60, 21,419.18 and 8,448.02

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Solution

The fourth proportional to 15,521.60, 21,419.18 and 8,448.02 is: 11,657.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.60 : 21,419.18 = 8,448.02 : x
  2. Step 2: Convert to fraction form
    15,521.60/21,419.18 = 8,448.02/x
  3. Step 3: Cross multiply
    15,521.60x = 21,419.18 × 8,448.02
  4. Step 4: Simplify right side
    15,521.60x = 180,949,511.69
  5. Step 5: Solve for x
    x = 180,949,511.69/15,521.60
  6. Step 6: Final answer
    x = 11,657.92

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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.