Home / 21,986.60-32,979.90-17,071.40

Finding the Fourth Proportional to 21,986.60, 32,979.90 and 17,071.40

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Solution

The fourth proportional to 21,986.60, 32,979.90 and 17,071.40 is: 25,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.60 : 32,979.90 = 17,071.40 : x
  2. Step 2: Convert to fraction form
    21,986.60/32,979.90 = 17,071.40/x
  3. Step 3: Cross multiply
    21,986.60x = 32,979.90 × 17,071.40
  4. Step 4: Simplify right side
    21,986.60x = 563,013,064.86
  5. Step 5: Solve for x
    x = 563,013,064.86/21,986.60
  6. Step 6: Final answer
    x = 25,607.10

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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.