Home / 28,388.56-39,176.52-15,814

Finding the Fourth Proportional to 28,388.56, 39,176.52 and 15,814

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Solution

The fourth proportional to 28,388.56, 39,176.52 and 15,814 is: 21,823.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.56 : 39,176.52 = 15,814 : x
  2. Step 2: Convert to fraction form
    28,388.56/39,176.52 = 15,814/x
  3. Step 3: Cross multiply
    28,388.56x = 39,176.52 × 15,814
  4. Step 4: Simplify right side
    28,388.56x = 619,537,487.28
  5. Step 5: Solve for x
    x = 619,537,487.28/28,388.56
  6. Step 6: Final answer
    x = 21,823.49

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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.