Home / 28,493.95-39,319.62-15,747

Finding the Fourth Proportional to 28,493.95, 39,319.62 and 15,747

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Solution

The fourth proportional to 28,493.95, 39,319.62 and 15,747 is: 21,729.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,493.95 : 39,319.62 = 15,747 : x
  2. Step 2: Convert to fraction form
    28,493.95/39,319.62 = 15,747/x
  3. Step 3: Cross multiply
    28,493.95x = 39,319.62 × 15,747
  4. Step 4: Simplify right side
    28,493.95x = 619,166,056.14
  5. Step 5: Solve for x
    x = 619,166,056.14/28,493.95
  6. Step 6: Final answer
    x = 21,729.74

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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.