Home / 28,449.72-39,260.88-15,875.28

Finding the Fourth Proportional to 28,449.72, 39,260.88 and 15,875.28

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Solution

The fourth proportional to 28,449.72, 39,260.88 and 15,875.28 is: 21,908.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,449.72 : 39,260.88 = 15,875.28 : x
  2. Step 2: Convert to fraction form
    28,449.72/39,260.88 = 15,875.28/x
  3. Step 3: Cross multiply
    28,449.72x = 39,260.88 × 15,875.28
  4. Step 4: Simplify right side
    28,449.72x = 623,277,463.05
  5. Step 5: Solve for x
    x = 623,277,463.05/28,449.72
  6. Step 6: Final answer
    x = 21,908.04

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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.