Home / 13,979.38-19,298.68-10,785.50

Finding the Fourth Proportional to 13,979.38, 19,298.68 and 10,785.50

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Solution

The fourth proportional to 13,979.38, 19,298.68 and 10,785.50 is: 14,889.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.38 : 19,298.68 = 10,785.50 : x
  2. Step 2: Convert to fraction form
    13,979.38/19,298.68 = 10,785.50/x
  3. Step 3: Cross multiply
    13,979.38x = 19,298.68 × 10,785.50
  4. Step 4: Simplify right side
    13,979.38x = 208,145,859.21
  5. Step 5: Solve for x
    x = 208,145,859.21/13,979.38
  6. Step 6: Final answer
    x = 14,889.50

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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.