Home / 15,269.80-21,072.56-9,301.72

Finding the Fourth Proportional to 15,269.80, 21,072.56 and 9,301.72

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Solution

The fourth proportional to 15,269.80, 21,072.56 and 9,301.72 is: 12,836.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.80 : 21,072.56 = 9,301.72 : x
  2. Step 2: Convert to fraction form
    15,269.80/21,072.56 = 9,301.72/x
  3. Step 3: Cross multiply
    15,269.80x = 21,072.56 × 9,301.72
  4. Step 4: Simplify right side
    15,269.80x = 196,011,052.80
  5. Step 5: Solve for x
    x = 196,011,052.80/15,269.80
  6. Step 6: Final answer
    x = 12,836.52

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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.