Home / 28,345.20-39,114.81-15,769.14

Finding the Fourth Proportional to 28,345.20, 39,114.81 and 15,769.14

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Solution

The fourth proportional to 28,345.20, 39,114.81 and 15,769.14 is: 21,760.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.20 : 39,114.81 = 15,769.14 : x
  2. Step 2: Convert to fraction form
    28,345.20/39,114.81 = 15,769.14/x
  3. Step 3: Cross multiply
    28,345.20x = 39,114.81 × 15,769.14
  4. Step 4: Simplify right side
    28,345.20x = 616,806,914.96
  5. Step 5: Solve for x
    x = 616,806,914.96/28,345.20
  6. Step 6: Final answer
    x = 21,760.54

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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.