Home / 20,682.67-31,013.27-10,148.08

Finding the Fourth Proportional to 20,682.67, 31,013.27 and 10,148.08

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Solution

The fourth proportional to 20,682.67, 31,013.27 and 10,148.08 is: 15,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.67 : 31,013.27 = 10,148.08 : x
  2. Step 2: Convert to fraction form
    20,682.67/31,013.27 = 10,148.08/x
  3. Step 3: Cross multiply
    20,682.67x = 31,013.27 × 10,148.08
  4. Step 4: Simplify right side
    20,682.67x = 314,725,209.16
  5. Step 5: Solve for x
    x = 314,725,209.16/20,682.67
  6. Step 6: Final answer
    x = 15,216.85

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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.