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Finding the Fourth Proportional to 14,129.66, 19,498.94 and 7,756.28

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Solution

The fourth proportional to 14,129.66, 19,498.94 and 7,756.28 is: 10,703.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.66 : 19,498.94 = 7,756.28 : x
  2. Step 2: Convert to fraction form
    14,129.66/19,498.94 = 7,756.28/x
  3. Step 3: Cross multiply
    14,129.66x = 19,498.94 × 7,756.28
  4. Step 4: Simplify right side
    14,129.66x = 151,239,306.48
  5. Step 5: Solve for x
    x = 151,239,306.48/14,129.66
  6. Step 6: Final answer
    x = 10,703.68

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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.