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Finding the Fourth Proportional to 36,006.40, 49,715.40 and 21,878.20

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Solution

The fourth proportional to 36,006.40, 49,715.40 and 21,878.20 is: 30,208.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,006.40 : 49,715.40 = 21,878.20 : x
  2. Step 2: Convert to fraction form
    36,006.40/49,715.40 = 21,878.20/x
  3. Step 3: Cross multiply
    36,006.40x = 49,715.40 × 21,878.20
  4. Step 4: Simplify right side
    36,006.40x = 1,087,683,464.28
  5. Step 5: Solve for x
    x = 1,087,683,464.28/36,006.40
  6. Step 6: Final answer
    x = 30,208.06

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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.