Home / 12,749.55-17,595.09-7,972.47

Finding the Fourth Proportional to 12,749.55, 17,595.09 and 7,972.47

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Solution

The fourth proportional to 12,749.55, 17,595.09 and 7,972.47 is: 11,002.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.55 : 17,595.09 = 7,972.47 : x
  2. Step 2: Convert to fraction form
    12,749.55/17,595.09 = 7,972.47/x
  3. Step 3: Cross multiply
    12,749.55x = 17,595.09 × 7,972.47
  4. Step 4: Simplify right side
    12,749.55x = 140,276,327.17
  5. Step 5: Solve for x
    x = 140,276,327.17/12,749.55
  6. Step 6: Final answer
    x = 11,002.45

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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.