Home / 28,040.78-38,696.24-15,465.52

Finding the Fourth Proportional to 28,040.78, 38,696.24 and 15,465.52

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Solution

The fourth proportional to 28,040.78, 38,696.24 and 15,465.52 is: 21,342.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040.78 : 38,696.24 = 15,465.52 : x
  2. Step 2: Convert to fraction form
    28,040.78/38,696.24 = 15,465.52/x
  3. Step 3: Cross multiply
    28,040.78x = 38,696.24 × 15,465.52
  4. Step 4: Simplify right side
    28,040.78x = 598,457,473.64
  5. Step 5: Solve for x
    x = 598,457,473.64/28,040.78
  6. Step 6: Final answer
    x = 21,342.40

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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.