Home / 28,283.07-39,028.31-15,535.59

Finding the Fourth Proportional to 28,283.07, 39,028.31 and 15,535.59

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Solution

The fourth proportional to 28,283.07, 39,028.31 and 15,535.59 is: 21,437.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.07 : 39,028.31 = 15,535.59 : x
  2. Step 2: Convert to fraction form
    28,283.07/39,028.31 = 15,535.59/x
  3. Step 3: Cross multiply
    28,283.07x = 39,028.31 × 15,535.59
  4. Step 4: Simplify right side
    28,283.07x = 606,327,822.55
  5. Step 5: Solve for x
    x = 606,327,822.55/28,283.07
  6. Step 6: Final answer
    x = 21,437.84

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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.