Home / 28,979.20-43,521.60-17,315.20

Finding the Fourth Proportional to 28,979.20, 43,521.60 and 17,315.20

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Solution

The fourth proportional to 28,979.20, 43,521.60 and 17,315.20 is: 26,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.20 : 43,521.60 = 17,315.20 : x
  2. Step 2: Convert to fraction form
    28,979.20/43,521.60 = 17,315.20/x
  3. Step 3: Cross multiply
    28,979.20x = 43,521.60 × 17,315.20
  4. Step 4: Simplify right side
    28,979.20x = 753,585,208.32
  5. Step 5: Solve for x
    x = 753,585,208.32/28,979.20
  6. Step 6: Final answer
    x = 26,004.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.