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Finding the Fourth Proportional to 10,720.40, 14,794.94 and 6,472.51

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Solution

The fourth proportional to 10,720.40, 14,794.94 and 6,472.51 is: 8,932.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.40 : 14,794.94 = 6,472.51 : x
  2. Step 2: Convert to fraction form
    10,720.40/14,794.94 = 6,472.51/x
  3. Step 3: Cross multiply
    10,720.40x = 14,794.94 × 6,472.51
  4. Step 4: Simplify right side
    10,720.40x = 95,760,290.76
  5. Step 5: Solve for x
    x = 95,760,290.76/10,720.40
  6. Step 6: Final answer
    x = 8,932.53

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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.