Home / 20,870.43-31,307.58-7,546.76

Finding the Fourth Proportional to 20,870.43, 31,307.58 and 7,546.76

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Solution

The fourth proportional to 20,870.43, 31,307.58 and 7,546.76 is: 11,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.43 : 31,307.58 = 7,546.76 : x
  2. Step 2: Convert to fraction form
    20,870.43/31,307.58 = 7,546.76/x
  3. Step 3: Cross multiply
    20,870.43x = 31,307.58 × 7,546.76
  4. Step 4: Simplify right side
    20,870.43x = 236,270,635.90
  5. Step 5: Solve for x
    x = 236,270,635.90/20,870.43
  6. Step 6: Final answer
    x = 11,320.83

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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.