Home / 10,138.81-15,193.63-4,287.37

Finding the Fourth Proportional to 10,138.81, 15,193.63 and 4,287.37

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Solution

The fourth proportional to 10,138.81, 15,193.63 and 4,287.37 is: 6,424.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.81 : 15,193.63 = 4,287.37 : x
  2. Step 2: Convert to fraction form
    10,138.81/15,193.63 = 4,287.37/x
  3. Step 3: Cross multiply
    10,138.81x = 15,193.63 × 4,287.37
  4. Step 4: Simplify right side
    10,138.81x = 65,140,713.45
  5. Step 5: Solve for x
    x = 65,140,713.45/10,138.81
  6. Step 6: Final answer
    x = 6,424.89

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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.