Home / 13,406.46-18,500.10-7,437.78

Finding the Fourth Proportional to 13,406.46, 18,500.10 and 7,437.78

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Solution

The fourth proportional to 13,406.46, 18,500.10 and 7,437.78 is: 10,263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.46 : 18,500.10 = 7,437.78 : x
  2. Step 2: Convert to fraction form
    13,406.46/18,500.10 = 7,437.78/x
  3. Step 3: Cross multiply
    13,406.46x = 18,500.10 × 7,437.78
  4. Step 4: Simplify right side
    13,406.46x = 137,599,673.78
  5. Step 5: Solve for x
    x = 137,599,673.78/13,406.46
  6. Step 6: Final answer
    x = 10,263.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.