Home / 28,275.90-38,993.49-18,207.24

Finding the Fourth Proportional to 28,275.90, 38,993.49 and 18,207.24

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Solution

The fourth proportional to 28,275.90, 38,993.49 and 18,207.24 is: 25,108.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.90 : 38,993.49 = 18,207.24 : x
  2. Step 2: Convert to fraction form
    28,275.90/38,993.49 = 18,207.24/x
  3. Step 3: Cross multiply
    28,275.90x = 38,993.49 × 18,207.24
  4. Step 4: Simplify right side
    28,275.90x = 709,963,830.87
  5. Step 5: Solve for x
    x = 709,963,830.87/28,275.90
  6. Step 6: Final answer
    x = 25,108.44

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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.