Home / 27,740.24-38,278.79-15,802.87

Finding the Fourth Proportional to 27,740.24, 38,278.79 and 15,802.87

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Solution

The fourth proportional to 27,740.24, 38,278.79 and 15,802.87 is: 21,806.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,740.24 : 38,278.79 = 15,802.87 : x
  2. Step 2: Convert to fraction form
    27,740.24/38,278.79 = 15,802.87/x
  3. Step 3: Cross multiply
    27,740.24x = 38,278.79 × 15,802.87
  4. Step 4: Simplify right side
    27,740.24x = 604,914,626.68
  5. Step 5: Solve for x
    x = 604,914,626.68/27,740.24
  6. Step 6: Final answer
    x = 21,806.39

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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.