Home / 10,077.06-13,911.30-7,729.68

Finding the Fourth Proportional to 10,077.06, 13,911.30 and 7,729.68

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Solution

The fourth proportional to 10,077.06, 13,911.30 and 7,729.68 is: 10,670.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.06 : 13,911.30 = 7,729.68 : x
  2. Step 2: Convert to fraction form
    10,077.06/13,911.30 = 7,729.68/x
  3. Step 3: Cross multiply
    10,077.06x = 13,911.30 × 7,729.68
  4. Step 4: Simplify right side
    10,077.06x = 107,529,897.38
  5. Step 5: Solve for x
    x = 107,529,897.38/10,077.06
  6. Step 6: Final answer
    x = 10,670.76

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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.