Home / 15,382.47-21,228.03-9,013.44

Finding the Fourth Proportional to 15,382.47, 21,228.03 and 9,013.44

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Solution

The fourth proportional to 15,382.47, 21,228.03 and 9,013.44 is: 12,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.47 : 21,228.03 = 9,013.44 : x
  2. Step 2: Convert to fraction form
    15,382.47/21,228.03 = 9,013.44/x
  3. Step 3: Cross multiply
    15,382.47x = 21,228.03 × 9,013.44
  4. Step 4: Simplify right side
    15,382.47x = 191,337,574.72
  5. Step 5: Solve for x
    x = 191,337,574.72/15,382.47
  6. Step 6: Final answer
    x = 12,438.68

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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.