Home / 13,355.68-18,435.22-9,377.78

Finding the Fourth Proportional to 13,355.68, 18,435.22 and 9,377.78

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Solution

The fourth proportional to 13,355.68, 18,435.22 and 9,377.78 is: 12,944.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.68 : 18,435.22 = 9,377.78 : x
  2. Step 2: Convert to fraction form
    13,355.68/18,435.22 = 9,377.78/x
  3. Step 3: Cross multiply
    13,355.68x = 18,435.22 × 9,377.78
  4. Step 4: Simplify right side
    13,355.68x = 172,881,437.41
  5. Step 5: Solve for x
    x = 172,881,437.41/13,355.68
  6. Step 6: Final answer
    x = 12,944.41

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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.