Home / 12,729.39-19,089.53-4,407.18

Finding the Fourth Proportional to 12,729.39, 19,089.53 and 4,407.18

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Solution

The fourth proportional to 12,729.39, 19,089.53 and 4,407.18 is: 6,609.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.39 : 19,089.53 = 4,407.18 : x
  2. Step 2: Convert to fraction form
    12,729.39/19,089.53 = 4,407.18/x
  3. Step 3: Cross multiply
    12,729.39x = 19,089.53 × 4,407.18
  4. Step 4: Simplify right side
    12,729.39x = 84,130,910.40
  5. Step 5: Solve for x
    x = 84,130,910.40/12,729.39
  6. Step 6: Final answer
    x = 6,609.19

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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.