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Finding the Fourth Proportional to 15,418.00, 21,276.70 and 8,703.49

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Solution

The fourth proportional to 15,418.00, 21,276.70 and 8,703.49 is: 12,010.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.00 : 21,276.70 = 8,703.49 : x
  2. Step 2: Convert to fraction form
    15,418.00/21,276.70 = 8,703.49/x
  3. Step 3: Cross multiply
    15,418.00x = 21,276.70 × 8,703.49
  4. Step 4: Simplify right side
    15,418.00x = 185,181,395.78
  5. Step 5: Solve for x
    x = 185,181,395.78/15,418.00
  6. Step 6: Final answer
    x = 12,010.73

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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.