Home / 21,178.92-29,225.94-11,747.40

Finding the Fourth Proportional to 21,178.92, 29,225.94 and 11,747.40

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Solution

The fourth proportional to 21,178.92, 29,225.94 and 11,747.40 is: 16,210.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.92 : 29,225.94 = 11,747.40 : x
  2. Step 2: Convert to fraction form
    21,178.92/29,225.94 = 11,747.40/x
  3. Step 3: Cross multiply
    21,178.92x = 29,225.94 × 11,747.40
  4. Step 4: Simplify right side
    21,178.92x = 343,328,807.56
  5. Step 5: Solve for x
    x = 343,328,807.56/21,178.92
  6. Step 6: Final answer
    x = 16,210.87

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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.