Home / 20,675.34-31,015.08-6,631.86

Finding the Fourth Proportional to 20,675.34, 31,015.08 and 6,631.86

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Solution

The fourth proportional to 20,675.34, 31,015.08 and 6,631.86 is: 9,948.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.34 : 31,015.08 = 6,631.86 : x
  2. Step 2: Convert to fraction form
    20,675.34/31,015.08 = 6,631.86/x
  3. Step 3: Cross multiply
    20,675.34x = 31,015.08 × 6,631.86
  4. Step 4: Simplify right side
    20,675.34x = 205,687,668.45
  5. Step 5: Solve for x
    x = 205,687,668.45/20,675.34
  6. Step 6: Final answer
    x = 9,948.45

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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.