Home / 21,988.39-32,987.21-7,196.16

Finding the Fourth Proportional to 21,988.39, 32,987.21 and 7,196.16

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Solution

The fourth proportional to 21,988.39, 32,987.21 and 7,196.16 is: 10,795.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.39 : 32,987.21 = 7,196.16 : x
  2. Step 2: Convert to fraction form
    21,988.39/32,987.21 = 7,196.16/x
  3. Step 3: Cross multiply
    21,988.39x = 32,987.21 × 7,196.16
  4. Step 4: Simplify right side
    21,988.39x = 237,381,241.11
  5. Step 5: Solve for x
    x = 237,381,241.11/21,988.39
  6. Step 6: Final answer
    x = 10,795.75

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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.