Home / 14,421.50-21,621.72-9,729.85

Finding the Fourth Proportional to 14,421.50, 21,621.72 and 9,729.85

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Solution

The fourth proportional to 14,421.50, 21,621.72 and 9,729.85 is: 14,587.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.50 : 21,621.72 = 9,729.85 : x
  2. Step 2: Convert to fraction form
    14,421.50/21,621.72 = 9,729.85/x
  3. Step 3: Cross multiply
    14,421.50x = 21,621.72 × 9,729.85
  4. Step 4: Simplify right side
    14,421.50x = 210,376,092.34
  5. Step 5: Solve for x
    x = 210,376,092.34/14,421.50
  6. Step 6: Final answer
    x = 14,587.67

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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.