Home / 20,555.11-30,835.89-8,708.92

Finding the Fourth Proportional to 20,555.11, 30,835.89 and 8,708.92

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Solution

The fourth proportional to 20,555.11, 30,835.89 and 8,708.92 is: 13,064.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.11 : 30,835.89 = 8,708.92 : x
  2. Step 2: Convert to fraction form
    20,555.11/30,835.89 = 8,708.92/x
  3. Step 3: Cross multiply
    20,555.11x = 30,835.89 × 8,708.92
  4. Step 4: Simplify right side
    20,555.11x = 268,547,222.05
  5. Step 5: Solve for x
    x = 268,547,222.05/20,555.11
  6. Step 6: Final answer
    x = 13,064.74

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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.