Home / 20,718.10-31,077.15-6,867.10

Finding the Fourth Proportional to 20,718.10, 31,077.15 and 6,867.10

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Solution

The fourth proportional to 20,718.10, 31,077.15 and 6,867.10 is: 10,300.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.10 : 31,077.15 = 6,867.10 : x
  2. Step 2: Convert to fraction form
    20,718.10/31,077.15 = 6,867.10/x
  3. Step 3: Cross multiply
    20,718.10x = 31,077.15 × 6,867.10
  4. Step 4: Simplify right side
    20,718.10x = 213,409,896.77
  5. Step 5: Solve for x
    x = 213,409,896.77/20,718.10
  6. Step 6: Final answer
    x = 10,300.65

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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.