Home / 10,161.40-15,206.46-8,790.88

Finding the Fourth Proportional to 10,161.40, 15,206.46 and 8,790.88

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Solution

The fourth proportional to 10,161.40, 15,206.46 and 8,790.88 is: 13,155.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,161.40 : 15,206.46 = 8,790.88 : x
  2. Step 2: Convert to fraction form
    10,161.40/15,206.46 = 8,790.88/x
  3. Step 3: Cross multiply
    10,161.40x = 15,206.46 × 8,790.88
  4. Step 4: Simplify right side
    10,161.40x = 133,678,165.08
  5. Step 5: Solve for x
    x = 133,678,165.08/10,161.40
  6. Step 6: Final answer
    x = 13,155.49

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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.