Home / 10,749.78-14,839.73-7,170.73

Finding the Fourth Proportional to 10,749.78, 14,839.73 and 7,170.73

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Solution

The fourth proportional to 10,749.78, 14,839.73 and 7,170.73 is: 9,898.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,749.78 : 14,839.73 = 7,170.73 : x
  2. Step 2: Convert to fraction form
    10,749.78/14,839.73 = 7,170.73/x
  3. Step 3: Cross multiply
    10,749.78x = 14,839.73 × 7,170.73
  4. Step 4: Simplify right side
    10,749.78x = 106,411,697.10
  5. Step 5: Solve for x
    x = 106,411,697.10/10,749.78
  6. Step 6: Final answer
    x = 9,898.97

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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.