Home / 27,815.45-38,386.94-15,882.53

Finding the Fourth Proportional to 27,815.45, 38,386.94 and 15,882.53

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Solution

The fourth proportional to 27,815.45, 38,386.94 and 15,882.53 is: 21,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.45 : 38,386.94 = 15,882.53 : x
  2. Step 2: Convert to fraction form
    27,815.45/38,386.94 = 15,882.53/x
  3. Step 3: Cross multiply
    27,815.45x = 38,386.94 × 15,882.53
  4. Step 4: Simplify right side
    27,815.45x = 609,681,454.81
  5. Step 5: Solve for x
    x = 609,681,454.81/27,815.45
  6. Step 6: Final answer
    x = 21,918.81

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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.