Home / 21,054.50-29,054.18-12,099.95

Finding the Fourth Proportional to 21,054.50, 29,054.18 and 12,099.95

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Solution

The fourth proportional to 21,054.50, 29,054.18 and 12,099.95 is: 16,697.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.50 : 29,054.18 = 12,099.95 : x
  2. Step 2: Convert to fraction form
    21,054.50/29,054.18 = 12,099.95/x
  3. Step 3: Cross multiply
    21,054.50x = 29,054.18 × 12,099.95
  4. Step 4: Simplify right side
    21,054.50x = 351,553,919.52
  5. Step 5: Solve for x
    x = 351,553,919.52/21,054.50
  6. Step 6: Final answer
    x = 16,697.33

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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.