Home / 28,812.13-39,734.31-19,750.66

Finding the Fourth Proportional to 28,812.13, 39,734.31 and 19,750.66

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Solution

The fourth proportional to 28,812.13, 39,734.31 and 19,750.66 is: 27,237.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.13 : 39,734.31 = 19,750.66 : x
  2. Step 2: Convert to fraction form
    28,812.13/39,734.31 = 19,750.66/x
  3. Step 3: Cross multiply
    28,812.13x = 39,734.31 × 19,750.66
  4. Step 4: Simplify right side
    28,812.13x = 784,778,747.81
  5. Step 5: Solve for x
    x = 784,778,747.81/28,812.13
  6. Step 6: Final answer
    x = 27,237.79

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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.