Home / 28,040.11-38,693.60-15,465.13

Finding the Fourth Proportional to 28,040.11, 38,693.60 and 15,465.13

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Solution

The fourth proportional to 28,040.11, 38,693.60 and 15,465.13 is: 21,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.11 : 38,693.60 = 15,465.13 : x
  2. Step 2: Convert to fraction form
    28,040.11/38,693.60 = 15,465.13/x
  3. Step 3: Cross multiply
    28,040.11x = 38,693.60 × 15,465.13
  4. Step 4: Simplify right side
    28,040.11x = 598,401,438.10
  5. Step 5: Solve for x
    x = 598,401,438.10/28,040.11
  6. Step 6: Final answer
    x = 21,340.91

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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.