Home / 21,918.06-32,878.89-7,126.65

Finding the Fourth Proportional to 21,918.06, 32,878.89 and 7,126.65

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Solution

The fourth proportional to 21,918.06, 32,878.89 and 7,126.65 is: 10,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918.06 : 32,878.89 = 7,126.65 : x
  2. Step 2: Convert to fraction form
    21,918.06/32,878.89 = 7,126.65/x
  3. Step 3: Cross multiply
    21,918.06x = 32,878.89 × 7,126.65
  4. Step 4: Simplify right side
    21,918.06x = 234,316,341.42
  5. Step 5: Solve for x
    x = 234,316,341.42/21,918.06
  6. Step 6: Final answer
    x = 10,690.56

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1.5x scale

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.