Home / 14,200.10-21,300.15-7,979.30

Finding the Fourth Proportional to 14,200.10, 21,300.15 and 7,979.30

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Solution

The fourth proportional to 14,200.10, 21,300.15 and 7,979.30 is: 11,968.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,200.10 : 21,300.15 = 7,979.30 : x
  2. Step 2: Convert to fraction form
    14,200.10/21,300.15 = 7,979.30/x
  3. Step 3: Cross multiply
    14,200.10x = 21,300.15 × 7,979.30
  4. Step 4: Simplify right side
    14,200.10x = 169,960,286.90
  5. Step 5: Solve for x
    x = 169,960,286.90/14,200.10
  6. Step 6: Final answer
    x = 11,968.95

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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.