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Finding the Fourth Proportional to 15,595, 21,521.46 and 9,630.76

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Solution

The fourth proportional to 15,595, 21,521.46 and 9,630.76 is: 13,290.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,595 : 21,521.46 = 9,630.76 : x
  2. Step 2: Convert to fraction form
    15,595/21,521.46 = 9,630.76/x
  3. Step 3: Cross multiply
    15,595x = 21,521.46 × 9,630.76
  4. Step 4: Simplify right side
    15,595x = 207,268,016.11
  5. Step 5: Solve for x
    x = 207,268,016.11/15,595
  6. Step 6: Final answer
    x = 13,290.67

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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.