Home / 19,209.75-28,807.69-8,117.29

Finding the Fourth Proportional to 19,209.75, 28,807.69 and 8,117.29

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Solution

The fourth proportional to 19,209.75, 28,807.69 and 8,117.29 is: 12,173.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.75 : 28,807.69 = 8,117.29 : x
  2. Step 2: Convert to fraction form
    19,209.75/28,807.69 = 8,117.29/x
  3. Step 3: Cross multiply
    19,209.75x = 28,807.69 × 8,117.29
  4. Step 4: Simplify right side
    19,209.75x = 233,840,389.68
  5. Step 5: Solve for x
    x = 233,840,389.68/19,209.75
  6. Step 6: Final answer
    x = 12,173.01

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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.