Home / 12,779.50-17,637.33-7,191.58

Finding the Fourth Proportional to 12,779.50, 17,637.33 and 7,191.58

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Solution

The fourth proportional to 12,779.50, 17,637.33 and 7,191.58 is: 9,925.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.50 : 17,637.33 = 7,191.58 : x
  2. Step 2: Convert to fraction form
    12,779.50/17,637.33 = 7,191.58/x
  3. Step 3: Cross multiply
    12,779.50x = 17,637.33 × 7,191.58
  4. Step 4: Simplify right side
    12,779.50x = 126,840,269.68
  5. Step 5: Solve for x
    x = 126,840,269.68/12,779.50
  6. Step 6: Final answer
    x = 9,925.29

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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.