Home / 28,615.40-42,908.11-11,972.33

Finding the Fourth Proportional to 28,615.40, 42,908.11 and 11,972.33

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Solution

The fourth proportional to 28,615.40, 42,908.11 and 11,972.33 is: 17,952.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.40 : 42,908.11 = 11,972.33 : x
  2. Step 2: Convert to fraction form
    28,615.40/42,908.11 = 11,972.33/x
  3. Step 3: Cross multiply
    28,615.40x = 42,908.11 × 11,972.33
  4. Step 4: Simplify right side
    28,615.40x = 513,710,052.60
  5. Step 5: Solve for x
    x = 513,710,052.60/28,615.40
  6. Step 6: Final answer
    x = 17,952.22

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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.