Home / 20,697.06-31,040.10-9,007.50

Finding the Fourth Proportional to 20,697.06, 31,040.10 and 9,007.50

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Solution

The fourth proportional to 20,697.06, 31,040.10 and 9,007.50 is: 13,508.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.06 : 31,040.10 = 9,007.50 : x
  2. Step 2: Convert to fraction form
    20,697.06/31,040.10 = 9,007.50/x
  3. Step 3: Cross multiply
    20,697.06x = 31,040.10 × 9,007.50
  4. Step 4: Simplify right side
    20,697.06x = 279,593,700.75
  5. Step 5: Solve for x
    x = 279,593,700.75/20,697.06
  6. Step 6: Final answer
    x = 13,508.86

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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.