Home / 12,215.15-18,298.42-6,660.17

Finding the Fourth Proportional to 12,215.15, 18,298.42 and 6,660.17

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Solution

The fourth proportional to 12,215.15, 18,298.42 and 6,660.17 is: 9,977.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.15 : 18,298.42 = 6,660.17 : x
  2. Step 2: Convert to fraction form
    12,215.15/18,298.42 = 6,660.17/x
  3. Step 3: Cross multiply
    12,215.15x = 18,298.42 × 6,660.17
  4. Step 4: Simplify right side
    12,215.15x = 121,870,587.93
  5. Step 5: Solve for x
    x = 121,870,587.93/12,215.15
  6. Step 6: Final answer
    x = 9,977.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.