Home / 13,330.80-19,965.78-11,435.40

Finding the Fourth Proportional to 13,330.80, 19,965.78 and 11,435.40

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Solution

The fourth proportional to 13,330.80, 19,965.78 and 11,435.40 is: 17,127.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.80 : 19,965.78 = 11,435.40 : x
  2. Step 2: Convert to fraction form
    13,330.80/19,965.78 = 11,435.40/x
  3. Step 3: Cross multiply
    13,330.80x = 19,965.78 × 11,435.40
  4. Step 4: Simplify right side
    13,330.80x = 228,316,680.61
  5. Step 5: Solve for x
    x = 228,316,680.61/13,330.80
  6. Step 6: Final answer
    x = 17,127.01

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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.