Home / 17,621.12-26,411.52-7,220

Finding the Fourth Proportional to 17,621.12, 26,411.52 and 7,220

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Solution

The fourth proportional to 17,621.12, 26,411.52 and 7,220 is: 10,821.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,621.12 : 26,411.52 = 7,220 : x
  2. Step 2: Convert to fraction form
    17,621.12/26,411.52 = 7,220/x
  3. Step 3: Cross multiply
    17,621.12x = 26,411.52 × 7,220
  4. Step 4: Simplify right side
    17,621.12x = 190,691,174.40
  5. Step 5: Solve for x
    x = 190,691,174.40/17,621.12
  6. Step 6: Final answer
    x = 10,821.74

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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.