Home / 10,661.55-15,999.24-4,818.21

Finding the Fourth Proportional to 10,661.55, 15,999.24 and 4,818.21

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Solution

The fourth proportional to 10,661.55, 15,999.24 and 4,818.21 is: 7,230.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.55 : 15,999.24 = 4,818.21 : x
  2. Step 2: Convert to fraction form
    10,661.55/15,999.24 = 4,818.21/x
  3. Step 3: Cross multiply
    10,661.55x = 15,999.24 × 4,818.21
  4. Step 4: Simplify right side
    10,661.55x = 77,087,698.16
  5. Step 5: Solve for x
    x = 77,087,698.16/10,661.55
  6. Step 6: Final answer
    x = 7,230.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.