Home / 20,100.84-30,165.29-8,255.51

Finding the Fourth Proportional to 20,100.84, 30,165.29 and 8,255.51

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Solution

The fourth proportional to 20,100.84, 30,165.29 and 8,255.51 is: 12,389.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.84 : 30,165.29 = 8,255.51 : x
  2. Step 2: Convert to fraction form
    20,100.84/30,165.29 = 8,255.51/x
  3. Step 3: Cross multiply
    20,100.84x = 30,165.29 × 8,255.51
  4. Step 4: Simplify right side
    20,100.84x = 249,029,661.14
  5. Step 5: Solve for x
    x = 249,029,661.14/20,100.84
  6. Step 6: Final answer
    x = 12,389.02

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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.