Home / 28,407.49-39,202.32-15,660.89

Finding the Fourth Proportional to 28,407.49, 39,202.32 and 15,660.89

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Solution

The fourth proportional to 28,407.49, 39,202.32 and 15,660.89 is: 21,612.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.49 : 39,202.32 = 15,660.89 : x
  2. Step 2: Convert to fraction form
    28,407.49/39,202.32 = 15,660.89/x
  3. Step 3: Cross multiply
    28,407.49x = 39,202.32 × 15,660.89
  4. Step 4: Simplify right side
    28,407.49x = 613,943,025.25
  5. Step 5: Solve for x
    x = 613,943,025.25/28,407.49
  6. Step 6: Final answer
    x = 21,612.01

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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.