Home / 15,000.23-20,700.36-8,285.82

Finding the Fourth Proportional to 15,000.23, 20,700.36 and 8,285.82

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Solution

The fourth proportional to 15,000.23, 20,700.36 and 8,285.82 is: 11,434.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.23 : 20,700.36 = 8,285.82 : x
  2. Step 2: Convert to fraction form
    15,000.23/20,700.36 = 8,285.82/x
  3. Step 3: Cross multiply
    15,000.23x = 20,700.36 × 8,285.82
  4. Step 4: Simplify right side
    15,000.23x = 171,519,456.90
  5. Step 5: Solve for x
    x = 171,519,456.90/15,000.23
  6. Step 6: Final answer
    x = 11,434.46

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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.