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Finding the Fourth Proportional to 13,685.98, 18,886.79 and 8,024.08

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Solution

The fourth proportional to 13,685.98, 18,886.79 and 8,024.08 is: 11,073.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.98 : 18,886.79 = 8,024.08 : x
  2. Step 2: Convert to fraction form
    13,685.98/18,886.79 = 8,024.08/x
  3. Step 3: Cross multiply
    13,685.98x = 18,886.79 × 8,024.08
  4. Step 4: Simplify right side
    13,685.98x = 151,549,113.90
  5. Step 5: Solve for x
    x = 151,549,113.90/13,685.98
  6. Step 6: Final answer
    x = 11,073.31

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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.