Home / 20,717.15-31,080.23-7,569.50

Finding the Fourth Proportional to 20,717.15, 31,080.23 and 7,569.50

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Solution

The fourth proportional to 20,717.15, 31,080.23 and 7,569.50 is: 11,355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.15 : 31,080.23 = 7,569.50 : x
  2. Step 2: Convert to fraction form
    20,717.15/31,080.23 = 7,569.50/x
  3. Step 3: Cross multiply
    20,717.15x = 31,080.23 × 7,569.50
  4. Step 4: Simplify right side
    20,717.15x = 235,261,763.14
  5. Step 5: Solve for x
    x = 235,261,763.14/20,717.15
  6. Step 6: Final answer
    x = 11,355.89

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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.