Home / 15,153.38-20,911.66-8,866.98

Finding the Fourth Proportional to 15,153.38, 20,911.66 and 8,866.98

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Solution

The fourth proportional to 15,153.38, 20,911.66 and 8,866.98 is: 12,236.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153.38 : 20,911.66 = 8,866.98 : x
  2. Step 2: Convert to fraction form
    15,153.38/20,911.66 = 8,866.98/x
  3. Step 3: Cross multiply
    15,153.38x = 20,911.66 × 8,866.98
  4. Step 4: Simplify right side
    15,153.38x = 185,423,270.99
  5. Step 5: Solve for x
    x = 185,423,270.99/15,153.38
  6. Step 6: Final answer
    x = 12,236.43

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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.