Home / 13,747.78-18,972.88-7,698.58

Finding the Fourth Proportional to 13,747.78, 18,972.88 and 7,698.58

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Solution

The fourth proportional to 13,747.78, 18,972.88 and 7,698.58 is: 10,624.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.78 : 18,972.88 = 7,698.58 : x
  2. Step 2: Convert to fraction form
    13,747.78/18,972.88 = 7,698.58/x
  3. Step 3: Cross multiply
    13,747.78x = 18,972.88 × 7,698.58
  4. Step 4: Simplify right side
    13,747.78x = 146,064,274.55
  5. Step 5: Solve for x
    x = 146,064,274.55/13,747.78
  6. Step 6: Final answer
    x = 10,624.58

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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.