Home / 21,979.10-32,968.18-5,339.21

Finding the Fourth Proportional to 21,979.10, 32,968.18 and 5,339.21

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Solution

The fourth proportional to 21,979.10, 32,968.18 and 5,339.21 is: 8,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.10 : 32,968.18 = 5,339.21 : x
  2. Step 2: Convert to fraction form
    21,979.10/32,968.18 = 5,339.21/x
  3. Step 3: Cross multiply
    21,979.10x = 32,968.18 × 5,339.21
  4. Step 4: Simplify right side
    21,979.10x = 176,024,036.34
  5. Step 5: Solve for x
    x = 176,024,036.34/21,979.10
  6. Step 6: Final answer
    x = 8,008.70

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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.