Home / 12,410.25-17,140.77-8,211.21

Finding the Fourth Proportional to 12,410.25, 17,140.77 and 8,211.21

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Solution

The fourth proportional to 12,410.25, 17,140.77 and 8,211.21 is: 11,341.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,410.25 : 17,140.77 = 8,211.21 : x
  2. Step 2: Convert to fraction form
    12,410.25/17,140.77 = 8,211.21/x
  3. Step 3: Cross multiply
    12,410.25x = 17,140.77 × 8,211.21
  4. Step 4: Simplify right side
    12,410.25x = 140,746,462.03
  5. Step 5: Solve for x
    x = 140,746,462.03/12,410.25
  6. Step 6: Final answer
    x = 11,341.15

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Half scale
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Double scale
Find fourth proportional to 12,411.25, 17,142.15 and 8,212.21
Similar ratio
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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.