Home / 20,767.36-31,155.96-8,288.08

Finding the Fourth Proportional to 20,767.36, 31,155.96 and 8,288.08

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Solution

The fourth proportional to 20,767.36, 31,155.96 and 8,288.08 is: 12,434.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.36 : 31,155.96 = 8,288.08 : x
  2. Step 2: Convert to fraction form
    20,767.36/31,155.96 = 8,288.08/x
  3. Step 3: Cross multiply
    20,767.36x = 31,155.96 × 8,288.08
  4. Step 4: Simplify right side
    20,767.36x = 258,223,088.96
  5. Step 5: Solve for x
    x = 258,223,088.96/20,767.36
  6. Step 6: Final answer
    x = 12,434.08

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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.