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Finding the Fourth Proportional to 11,393.80, 15,720.50 and 10,601.02

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Solution

The fourth proportional to 11,393.80, 15,720.50 and 10,601.02 is: 14,626.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.80 : 15,720.50 = 10,601.02 : x
  2. Step 2: Convert to fraction form
    11,393.80/15,720.50 = 10,601.02/x
  3. Step 3: Cross multiply
    11,393.80x = 15,720.50 × 10,601.02
  4. Step 4: Simplify right side
    11,393.80x = 166,653,334.91
  5. Step 5: Solve for x
    x = 166,653,334.91/11,393.80
  6. Step 6: Final answer
    x = 14,626.67

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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.