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Finding the Fourth Proportional to 18,752.74, 25,852.08 and 12,776.76

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Solution

The fourth proportional to 18,752.74, 25,852.08 and 12,776.76 is: 17,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.74 : 25,852.08 = 12,776.76 : x
  2. Step 2: Convert to fraction form
    18,752.74/25,852.08 = 12,776.76/x
  3. Step 3: Cross multiply
    18,752.74x = 25,852.08 × 12,776.76
  4. Step 4: Simplify right side
    18,752.74x = 330,305,821.66
  5. Step 5: Solve for x
    x = 330,305,821.66/18,752.74
  6. Step 6: Final answer
    x = 17,613.74

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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.