Home / 13,786.60-20,663.50-7,930.91

Finding the Fourth Proportional to 13,786.60, 20,663.50 and 7,930.91

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Solution

The fourth proportional to 13,786.60, 20,663.50 and 7,930.91 is: 11,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.60 : 20,663.50 = 7,930.91 : x
  2. Step 2: Convert to fraction form
    13,786.60/20,663.50 = 7,930.91/x
  3. Step 3: Cross multiply
    13,786.60x = 20,663.50 × 7,930.91
  4. Step 4: Simplify right side
    13,786.60x = 163,880,215.81
  5. Step 5: Solve for x
    x = 163,880,215.81/13,786.60
  6. Step 6: Final answer
    x = 11,886.92

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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.