Home / 10,528.64-15,791.70-8,190.98

Finding the Fourth Proportional to 10,528.64, 15,791.70 and 8,190.98

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Solution

The fourth proportional to 10,528.64, 15,791.70 and 8,190.98 is: 12,285.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,528.64 : 15,791.70 = 8,190.98 : x
  2. Step 2: Convert to fraction form
    10,528.64/15,791.70 = 8,190.98/x
  3. Step 3: Cross multiply
    10,528.64x = 15,791.70 × 8,190.98
  4. Step 4: Simplify right side
    10,528.64x = 129,349,498.87
  5. Step 5: Solve for x
    x = 129,349,498.87/10,528.64
  6. Step 6: Final answer
    x = 12,285.49

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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.