Home / 13,239.89-19,871.22-7,685.52

Finding the Fourth Proportional to 13,239.89, 19,871.22 and 7,685.52

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Solution

The fourth proportional to 13,239.89, 19,871.22 and 7,685.52 is: 11,534.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.89 : 19,871.22 = 7,685.52 : x
  2. Step 2: Convert to fraction form
    13,239.89/19,871.22 = 7,685.52/x
  3. Step 3: Cross multiply
    13,239.89x = 19,871.22 × 7,685.52
  4. Step 4: Simplify right side
    13,239.89x = 152,720,613.04
  5. Step 5: Solve for x
    x = 152,720,613.04/13,239.89
  6. Step 6: Final answer
    x = 11,534.89

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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.