Home / 13,116.79-19,678.56-4,351.78

Finding the Fourth Proportional to 13,116.79, 19,678.56 and 4,351.78

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Solution

The fourth proportional to 13,116.79, 19,678.56 and 4,351.78 is: 6,528.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.79 : 19,678.56 = 4,351.78 : x
  2. Step 2: Convert to fraction form
    13,116.79/19,678.56 = 4,351.78/x
  3. Step 3: Cross multiply
    13,116.79x = 19,678.56 × 4,351.78
  4. Step 4: Simplify right side
    13,116.79x = 85,636,763.84
  5. Step 5: Solve for x
    x = 85,636,763.84/13,116.79
  6. Step 6: Final answer
    x = 6,528.79

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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.