Home / 13,335.65-20,010.45-8,654.55

Finding the Fourth Proportional to 13,335.65, 20,010.45 and 8,654.55

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Solution

The fourth proportional to 13,335.65, 20,010.45 and 8,654.55 is: 12,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.65 : 20,010.45 = 8,654.55 : x
  2. Step 2: Convert to fraction form
    13,335.65/20,010.45 = 8,654.55/x
  3. Step 3: Cross multiply
    13,335.65x = 20,010.45 × 8,654.55
  4. Step 4: Simplify right side
    13,335.65x = 173,181,440.05
  5. Step 5: Solve for x
    x = 173,181,440.05/13,335.65
  6. Step 6: Final answer
    x = 12,986.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.