Home / 28,335.57-39,102.99-15,760.32

Finding the Fourth Proportional to 28,335.57, 39,102.99 and 15,760.32

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Solution

The fourth proportional to 28,335.57, 39,102.99 and 15,760.32 is: 21,749.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.57 : 39,102.99 = 15,760.32 : x
  2. Step 2: Convert to fraction form
    28,335.57/39,102.99 = 15,760.32/x
  3. Step 3: Cross multiply
    28,335.57x = 39,102.99 × 15,760.32
  4. Step 4: Simplify right side
    28,335.57x = 616,275,635.36
  5. Step 5: Solve for x
    x = 616,275,635.36/28,335.57
  6. Step 6: Final answer
    x = 21,749.19

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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.