Home / 10,520.10-14,507.37-8,161.38

Finding the Fourth Proportional to 10,520.10, 14,507.37 and 8,161.38

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Solution

The fourth proportional to 10,520.10, 14,507.37 and 8,161.38 is: 11,254.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.10 : 14,507.37 = 8,161.38 : x
  2. Step 2: Convert to fraction form
    10,520.10/14,507.37 = 8,161.38/x
  3. Step 3: Cross multiply
    10,520.10x = 14,507.37 × 8,161.38
  4. Step 4: Simplify right side
    10,520.10x = 118,400,159.37
  5. Step 5: Solve for x
    x = 118,400,159.37/10,520.10
  6. Step 6: Final answer
    x = 11,254.66

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Half scale
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Double scale
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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.