Home / 18,210.12-27,321.69-7,124.76

Finding the Fourth Proportional to 18,210.12, 27,321.69 and 7,124.76

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Solution

The fourth proportional to 18,210.12, 27,321.69 and 7,124.76 is: 10,689.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,210.12 : 27,321.69 = 7,124.76 : x
  2. Step 2: Convert to fraction form
    18,210.12/27,321.69 = 7,124.76/x
  3. Step 3: Cross multiply
    18,210.12x = 27,321.69 × 7,124.76
  4. Step 4: Simplify right side
    18,210.12x = 194,660,484.04
  5. Step 5: Solve for x
    x = 194,660,484.04/18,210.12
  6. Step 6: Final answer
    x = 10,689.69

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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.