Home / 15,040.09-20,746.25-9,660.72

Finding the Fourth Proportional to 15,040.09, 20,746.25 and 9,660.72

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Solution

The fourth proportional to 15,040.09, 20,746.25 and 9,660.72 is: 13,325.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,040.09 : 20,746.25 = 9,660.72 : x
  2. Step 2: Convert to fraction form
    15,040.09/20,746.25 = 9,660.72/x
  3. Step 3: Cross multiply
    15,040.09x = 20,746.25 × 9,660.72
  4. Step 4: Simplify right side
    15,040.09x = 200,423,586.20
  5. Step 5: Solve for x
    x = 200,423,586.20/15,040.09
  6. Step 6: Final answer
    x = 13,325.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.