Home / 15,486.60-21,373.35-9,198.99

Finding the Fourth Proportional to 15,486.60, 21,373.35 and 9,198.99

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Solution

The fourth proportional to 15,486.60, 21,373.35 and 9,198.99 is: 12,695.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.60 : 21,373.35 = 9,198.99 : x
  2. Step 2: Convert to fraction form
    15,486.60/21,373.35 = 9,198.99/x
  3. Step 3: Cross multiply
    15,486.60x = 21,373.35 × 9,198.99
  4. Step 4: Simplify right side
    15,486.60x = 196,613,232.92
  5. Step 5: Solve for x
    x = 196,613,232.92/15,486.60
  6. Step 6: Final answer
    x = 12,695.70

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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.