Home / 13,435.30-18,522.55-11,335.78

Finding the Fourth Proportional to 13,435.30, 18,522.55 and 11,335.78

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Solution

The fourth proportional to 13,435.30, 18,522.55 and 11,335.78 is: 15,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.30 : 18,522.55 = 11,335.78 : x
  2. Step 2: Convert to fraction form
    13,435.30/18,522.55 = 11,335.78/x
  3. Step 3: Cross multiply
    13,435.30x = 18,522.55 × 11,335.78
  4. Step 4: Simplify right side
    13,435.30x = 209,967,551.84
  5. Step 5: Solve for x
    x = 209,967,551.84/13,435.30
  6. Step 6: Final answer
    x = 15,628.05

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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.