Home / 15,303.70-21,121.24-8,499.25

Finding the Fourth Proportional to 15,303.70, 21,121.24 and 8,499.25

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Solution

The fourth proportional to 15,303.70, 21,121.24 and 8,499.25 is: 11,730.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,303.70 : 21,121.24 = 8,499.25 : x
  2. Step 2: Convert to fraction form
    15,303.70/21,121.24 = 8,499.25/x
  3. Step 3: Cross multiply
    15,303.70x = 21,121.24 × 8,499.25
  4. Step 4: Simplify right side
    15,303.70x = 179,514,730.62
  5. Step 5: Solve for x
    x = 179,514,730.62/15,303.70
  6. Step 6: Final answer
    x = 11,730.15

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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.