Home / 19,778.30-29,667.50-6,630.72

Finding the Fourth Proportional to 19,778.30, 29,667.50 and 6,630.72

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Solution

The fourth proportional to 19,778.30, 29,667.50 and 6,630.72 is: 9,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,778.30 : 29,667.50 = 6,630.72 : x
  2. Step 2: Convert to fraction form
    19,778.30/29,667.50 = 6,630.72/x
  3. Step 3: Cross multiply
    19,778.30x = 29,667.50 × 6,630.72
  4. Step 4: Simplify right side
    19,778.30x = 196,716,885.60
  5. Step 5: Solve for x
    x = 196,716,885.60/19,778.30
  6. Step 6: Final answer
    x = 9,946.10

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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.