Home / 28,266.24-39,005.46-15,690

Finding the Fourth Proportional to 28,266.24, 39,005.46 and 15,690

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Solution

The fourth proportional to 28,266.24, 39,005.46 and 15,690 is: 21,651.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.24 : 39,005.46 = 15,690 : x
  2. Step 2: Convert to fraction form
    28,266.24/39,005.46 = 15,690/x
  3. Step 3: Cross multiply
    28,266.24x = 39,005.46 × 15,690
  4. Step 4: Simplify right side
    28,266.24x = 611,995,667.40
  5. Step 5: Solve for x
    x = 611,995,667.40/28,266.24
  6. Step 6: Final answer
    x = 21,651.12

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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.