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Finding the Fourth Proportional to 12,871, 17,752.26 and 8,898.76

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Solution

The fourth proportional to 12,871, 17,752.26 and 8,898.76 is: 12,273.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871 : 17,752.26 = 8,898.76 : x
  2. Step 2: Convert to fraction form
    12,871/17,752.26 = 8,898.76/x
  3. Step 3: Cross multiply
    12,871x = 17,752.26 × 8,898.76
  4. Step 4: Simplify right side
    12,871x = 157,973,101.20
  5. Step 5: Solve for x
    x = 157,973,101.20/12,871
  6. Step 6: Final answer
    x = 12,273.57

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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.