Home / 12,738.87-17,580.59-7,703.28

Finding the Fourth Proportional to 12,738.87, 17,580.59 and 7,703.28

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Solution

The fourth proportional to 12,738.87, 17,580.59 and 7,703.28 is: 10,631.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.87 : 17,580.59 = 7,703.28 : x
  2. Step 2: Convert to fraction form
    12,738.87/17,580.59 = 7,703.28/x
  3. Step 3: Cross multiply
    12,738.87x = 17,580.59 × 7,703.28
  4. Step 4: Simplify right side
    12,738.87x = 135,428,207.34
  5. Step 5: Solve for x
    x = 135,428,207.34/12,738.87
  6. Step 6: Final answer
    x = 10,631.10

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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.