Home / 15,011.60-20,715.82-8,297.36

Finding the Fourth Proportional to 15,011.60, 20,715.82 and 8,297.36

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Solution

The fourth proportional to 15,011.60, 20,715.82 and 8,297.36 is: 11,450.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.60 : 20,715.82 = 8,297.36 : x
  2. Step 2: Convert to fraction form
    15,011.60/20,715.82 = 8,297.36/x
  3. Step 3: Cross multiply
    15,011.60x = 20,715.82 × 8,297.36
  4. Step 4: Simplify right side
    15,011.60x = 171,886,491.91
  5. Step 5: Solve for x
    x = 171,886,491.91/15,011.60
  6. Step 6: Final answer
    x = 11,450.24

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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.