Home / 15,493.25-21,378.04-8,777.49

Finding the Fourth Proportional to 15,493.25, 21,378.04 and 8,777.49

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Solution

The fourth proportional to 15,493.25, 21,378.04 and 8,777.49 is: 12,111.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,493.25 : 21,378.04 = 8,777.49 : x
  2. Step 2: Convert to fraction form
    15,493.25/21,378.04 = 8,777.49/x
  3. Step 3: Cross multiply
    15,493.25x = 21,378.04 × 8,777.49
  4. Step 4: Simplify right side
    15,493.25x = 187,645,430.21
  5. Step 5: Solve for x
    x = 187,645,430.21/15,493.25
  6. Step 6: Final answer
    x = 12,111.44

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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.