Home / 21,605.63-32,421.20-9,124.85

Finding the Fourth Proportional to 21,605.63, 32,421.20 and 9,124.85

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Solution

The fourth proportional to 21,605.63, 32,421.20 and 9,124.85 is: 13,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.63 : 32,421.20 = 9,124.85 : x
  2. Step 2: Convert to fraction form
    21,605.63/32,421.20 = 9,124.85/x
  3. Step 3: Cross multiply
    21,605.63x = 32,421.20 × 9,124.85
  4. Step 4: Simplify right side
    21,605.63x = 295,838,622.25
  5. Step 5: Solve for x
    x = 295,838,622.25/21,605.63
  6. Step 6: Final answer
    x = 13,692.67

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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.