Home / 15,121.38-20,828.40-10,576.02

Finding the Fourth Proportional to 15,121.38, 20,828.40 and 10,576.02

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Solution

The fourth proportional to 15,121.38, 20,828.40 and 10,576.02 is: 14,567.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.38 : 20,828.40 = 10,576.02 : x
  2. Step 2: Convert to fraction form
    15,121.38/20,828.40 = 10,576.02/x
  3. Step 3: Cross multiply
    15,121.38x = 20,828.40 × 10,576.02
  4. Step 4: Simplify right side
    15,121.38x = 220,281,574.97
  5. Step 5: Solve for x
    x = 220,281,574.97/15,121.38
  6. Step 6: Final answer
    x = 14,567.56

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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.