Home / 15,535.27-21,439.21-8,820.67

Finding the Fourth Proportional to 15,535.27, 21,439.21 and 8,820.67

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Solution

The fourth proportional to 15,535.27, 21,439.21 and 8,820.67 is: 12,172.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.27 : 21,439.21 = 8,820.67 : x
  2. Step 2: Convert to fraction form
    15,535.27/21,439.21 = 8,820.67/x
  3. Step 3: Cross multiply
    15,535.27x = 21,439.21 × 8,820.67
  4. Step 4: Simplify right side
    15,535.27x = 189,108,196.47
  5. Step 5: Solve for x
    x = 189,108,196.47/15,535.27
  6. Step 6: Final answer
    x = 12,172.83

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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.