Home / 21,412.55-32,118.83-6,621.14

Finding the Fourth Proportional to 21,412.55, 32,118.83 and 6,621.14

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Solution

The fourth proportional to 21,412.55, 32,118.83 and 6,621.14 is: 9,931.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,412.55 : 32,118.83 = 6,621.14 : x
  2. Step 2: Convert to fraction form
    21,412.55/32,118.83 = 6,621.14/x
  3. Step 3: Cross multiply
    21,412.55x = 32,118.83 × 6,621.14
  4. Step 4: Simplify right side
    21,412.55x = 212,663,270.07
  5. Step 5: Solve for x
    x = 212,663,270.07/21,412.55
  6. Step 6: Final answer
    x = 9,931.71

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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.