Home / 34,755.12-47,962.44-21,139.20

Finding the Fourth Proportional to 34,755.12, 47,962.44 and 21,139.20

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Solution

The fourth proportional to 34,755.12, 47,962.44 and 21,139.20 is: 29,172.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,755.12 : 47,962.44 = 21,139.20 : x
  2. Step 2: Convert to fraction form
    34,755.12/47,962.44 = 21,139.20/x
  3. Step 3: Cross multiply
    34,755.12x = 47,962.44 × 21,139.20
  4. Step 4: Simplify right side
    34,755.12x = 1,013,887,611.65
  5. Step 5: Solve for x
    x = 1,013,887,611.65/34,755.12
  6. Step 6: Final answer
    x = 29,172.32

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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.