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Finding the Fourth Proportional to 15,017.72, 20,725.03 and 9,973.24

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Solution

The fourth proportional to 15,017.72, 20,725.03 and 9,973.24 is: 13,763.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.72 : 20,725.03 = 9,973.24 : x
  2. Step 2: Convert to fraction form
    15,017.72/20,725.03 = 9,973.24/x
  3. Step 3: Cross multiply
    15,017.72x = 20,725.03 × 9,973.24
  4. Step 4: Simplify right side
    15,017.72x = 206,695,698.20
  5. Step 5: Solve for x
    x = 206,695,698.20/15,017.72
  6. Step 6: Final answer
    x = 13,763.45

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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.