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Finding the Fourth Proportional to 21,925.98, 32,868.09 and 7,124.49

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Solution

The fourth proportional to 21,925.98, 32,868.09 and 7,124.49 is: 10,679.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,925.98 : 32,868.09 = 7,124.49 : x
  2. Step 2: Convert to fraction form
    21,925.98/32,868.09 = 7,124.49/x
  3. Step 3: Cross multiply
    21,925.98x = 32,868.09 × 7,124.49
  4. Step 4: Simplify right side
    21,925.98x = 234,168,378.52
  5. Step 5: Solve for x
    x = 234,168,378.52/21,925.98
  6. Step 6: Final answer
    x = 10,679.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.