Home / 27,798.87-38,361.89-15,860.28

Finding the Fourth Proportional to 27,798.87, 38,361.89 and 15,860.28

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Solution

The fourth proportional to 27,798.87, 38,361.89 and 15,860.28 is: 21,886.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,798.87 : 38,361.89 = 15,860.28 : x
  2. Step 2: Convert to fraction form
    27,798.87/38,361.89 = 15,860.28/x
  3. Step 3: Cross multiply
    27,798.87x = 38,361.89 × 15,860.28
  4. Step 4: Simplify right side
    27,798.87x = 608,430,045.62
  5. Step 5: Solve for x
    x = 608,430,045.62/27,798.87
  6. Step 6: Final answer
    x = 21,886.87

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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.