Home / 15,373.40-21,217.30-8,660.32

Finding the Fourth Proportional to 15,373.40, 21,217.30 and 8,660.32

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Solution

The fourth proportional to 15,373.40, 21,217.30 and 8,660.32 is: 11,952.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,373.40 : 21,217.30 = 8,660.32 : x
  2. Step 2: Convert to fraction form
    15,373.40/21,217.30 = 8,660.32/x
  3. Step 3: Cross multiply
    15,373.40x = 21,217.30 × 8,660.32
  4. Step 4: Simplify right side
    15,373.40x = 183,748,458.15
  5. Step 5: Solve for x
    x = 183,748,458.15/15,373.40
  6. Step 6: Final answer
    x = 11,952.37

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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.