Home / 15,607.20-21,525.84-9,312.96

Finding the Fourth Proportional to 15,607.20, 21,525.84 and 9,312.96

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Solution

The fourth proportional to 15,607.20, 21,525.84 and 9,312.96 is: 12,844.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.20 : 21,525.84 = 9,312.96 : x
  2. Step 2: Convert to fraction form
    15,607.20/21,525.84 = 9,312.96/x
  3. Step 3: Cross multiply
    15,607.20x = 21,525.84 × 9,312.96
  4. Step 4: Simplify right side
    15,607.20x = 200,469,286.89
  5. Step 5: Solve for x
    x = 200,469,286.89/15,607.20
  6. Step 6: Final answer
    x = 12,844.67

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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.