Home / 15,433.40-21,297.84-8,359.76

Finding the Fourth Proportional to 15,433.40, 21,297.84 and 8,359.76

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Solution

The fourth proportional to 15,433.40, 21,297.84 and 8,359.76 is: 11,536.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,433.40 : 21,297.84 = 8,359.76 : x
  2. Step 2: Convert to fraction form
    15,433.40/21,297.84 = 8,359.76/x
  3. Step 3: Cross multiply
    15,433.40x = 21,297.84 × 8,359.76
  4. Step 4: Simplify right side
    15,433.40x = 178,044,830.92
  5. Step 5: Solve for x
    x = 178,044,830.92/15,433.40
  6. Step 6: Final answer
    x = 11,536.33

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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.