Home / 28,615.50-42,908.67-11,971.02

Finding the Fourth Proportional to 28,615.50, 42,908.67 and 11,971.02

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Solution

The fourth proportional to 28,615.50, 42,908.67 and 11,971.02 is: 17,950.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.50 : 42,908.67 = 11,971.02 : x
  2. Step 2: Convert to fraction form
    28,615.50/42,908.67 = 11,971.02/x
  3. Step 3: Cross multiply
    28,615.50x = 42,908.67 × 11,971.02
  4. Step 4: Simplify right side
    28,615.50x = 513,660,546.74
  5. Step 5: Solve for x
    x = 513,660,546.74/28,615.50
  6. Step 6: Final answer
    x = 17,950.43

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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.