Home / 17,721.32-26,566.90-7,855.20

Finding the Fourth Proportional to 17,721.32, 26,566.90 and 7,855.20

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Solution

The fourth proportional to 17,721.32, 26,566.90 and 7,855.20 is: 11,776.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,721.32 : 26,566.90 = 7,855.20 : x
  2. Step 2: Convert to fraction form
    17,721.32/26,566.90 = 7,855.20/x
  3. Step 3: Cross multiply
    17,721.32x = 26,566.90 × 7,855.20
  4. Step 4: Simplify right side
    17,721.32x = 208,688,312.88
  5. Step 5: Solve for x
    x = 208,688,312.88/17,721.32
  6. Step 6: Final answer
    x = 11,776.12

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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.