Home / 10,105.71-15,155.73-4,187.04

Finding the Fourth Proportional to 10,105.71, 15,155.73 and 4,187.04

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Solution

The fourth proportional to 10,105.71, 15,155.73 and 4,187.04 is: 6,279.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,105.71 : 15,155.73 = 4,187.04 : x
  2. Step 2: Convert to fraction form
    10,105.71/15,155.73 = 4,187.04/x
  3. Step 3: Cross multiply
    10,105.71x = 15,155.73 × 4,187.04
  4. Step 4: Simplify right side
    10,105.71x = 63,457,647.74
  5. Step 5: Solve for x
    x = 63,457,647.74/10,105.71
  6. Step 6: Final answer
    x = 6,279.39

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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.