Home / 20,875.11-31,312.73-5,080.15

Finding the Fourth Proportional to 20,875.11, 31,312.73 and 5,080.15

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Solution

The fourth proportional to 20,875.11, 31,312.73 and 5,080.15 is: 7,620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.11 : 31,312.73 = 5,080.15 : x
  2. Step 2: Convert to fraction form
    20,875.11/31,312.73 = 5,080.15/x
  3. Step 3: Cross multiply
    20,875.11x = 31,312.73 × 5,080.15
  4. Step 4: Simplify right side
    20,875.11x = 159,073,299.73
  5. Step 5: Solve for x
    x = 159,073,299.73/20,875.11
  6. Step 6: Final answer
    x = 7,620.24

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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.