Home / 15,505.96-21,400.30-8,794.02

Finding the Fourth Proportional to 15,505.96, 21,400.30 and 8,794.02

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Solution

The fourth proportional to 15,505.96, 21,400.30 and 8,794.02 is: 12,136.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.96 : 21,400.30 = 8,794.02 : x
  2. Step 2: Convert to fraction form
    15,505.96/21,400.30 = 8,794.02/x
  3. Step 3: Cross multiply
    15,505.96x = 21,400.30 × 8,794.02
  4. Step 4: Simplify right side
    15,505.96x = 188,194,666.21
  5. Step 5: Solve for x
    x = 188,194,666.21/15,505.96
  6. Step 6: Final answer
    x = 12,136.92

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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.