Home / 12,738.20-17,573.88-9,389

Finding the Fourth Proportional to 12,738.20, 17,573.88 and 9,389

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Solution

The fourth proportional to 12,738.20, 17,573.88 and 9,389 is: 12,953.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.20 : 17,573.88 = 9,389 : x
  2. Step 2: Convert to fraction form
    12,738.20/17,573.88 = 9,389/x
  3. Step 3: Cross multiply
    12,738.20x = 17,573.88 × 9,389
  4. Step 4: Simplify right side
    12,738.20x = 165,001,159.32
  5. Step 5: Solve for x
    x = 165,001,159.32/12,738.20
  6. Step 6: Final answer
    x = 12,953.26

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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.