Home / 14,267.20-19,689.12-7,979.20

Finding the Fourth Proportional to 14,267.20, 19,689.12 and 7,979.20

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Solution

The fourth proportional to 14,267.20, 19,689.12 and 7,979.20 is: 11,011.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,267.20 : 19,689.12 = 7,979.20 : x
  2. Step 2: Convert to fraction form
    14,267.20/19,689.12 = 7,979.20/x
  3. Step 3: Cross multiply
    14,267.20x = 19,689.12 × 7,979.20
  4. Step 4: Simplify right side
    14,267.20x = 157,103,426.30
  5. Step 5: Solve for x
    x = 157,103,426.30/14,267.20
  6. Step 6: Final answer
    x = 11,011.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.