Home / 28,246.88-38,985.36-15,675.68

Finding the Fourth Proportional to 28,246.88, 38,985.36 and 15,675.68

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Solution

The fourth proportional to 28,246.88, 38,985.36 and 15,675.68 is: 21,635.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.88 : 38,985.36 = 15,675.68 : x
  2. Step 2: Convert to fraction form
    28,246.88/38,985.36 = 15,675.68/x
  3. Step 3: Cross multiply
    28,246.88x = 38,985.36 × 15,675.68
  4. Step 4: Simplify right side
    28,246.88x = 611,122,028.04
  5. Step 5: Solve for x
    x = 611,122,028.04/28,246.88
  6. Step 6: Final answer
    x = 21,635.03

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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.