Home / 13,284.30-18,332.37-7,979.20

Finding the Fourth Proportional to 13,284.30, 18,332.37 and 7,979.20

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Solution

The fourth proportional to 13,284.30, 18,332.37 and 7,979.20 is: 11,011.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,284.30 : 18,332.37 = 7,979.20 : x
  2. Step 2: Convert to fraction form
    13,284.30/18,332.37 = 7,979.20/x
  3. Step 3: Cross multiply
    13,284.30x = 18,332.37 × 7,979.20
  4. Step 4: Simplify right side
    13,284.30x = 146,277,646.70
  5. Step 5: Solve for x
    x = 146,277,646.70/13,284.30
  6. Step 6: Final answer
    x = 11,011.32

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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.