Home / 28,548.08-39,395.52-15,801.78

Finding the Fourth Proportional to 28,548.08, 39,395.52 and 15,801.78

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Solution

The fourth proportional to 28,548.08, 39,395.52 and 15,801.78 is: 21,806.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,548.08 : 39,395.52 = 15,801.78 : x
  2. Step 2: Convert to fraction form
    28,548.08/39,395.52 = 15,801.78/x
  3. Step 3: Cross multiply
    28,548.08x = 39,395.52 × 15,801.78
  4. Step 4: Simplify right side
    28,548.08x = 622,519,340.03
  5. Step 5: Solve for x
    x = 622,519,340.03/28,548.08
  6. Step 6: Final answer
    x = 21,806.00

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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.