Home / 13,871.12-19,132.08-8,830.80

Finding the Fourth Proportional to 13,871.12, 19,132.08 and 8,830.80

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Solution

The fourth proportional to 13,871.12, 19,132.08 and 8,830.80 is: 12,180.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.12 : 19,132.08 = 8,830.80 : x
  2. Step 2: Convert to fraction form
    13,871.12/19,132.08 = 8,830.80/x
  3. Step 3: Cross multiply
    13,871.12x = 19,132.08 × 8,830.80
  4. Step 4: Simplify right side
    13,871.12x = 168,951,572.06
  5. Step 5: Solve for x
    x = 168,951,572.06/13,871.12
  6. Step 6: Final answer
    x = 12,180.10

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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.