Home / 12,417.30-17,130.69-8,218.26

Finding the Fourth Proportional to 12,417.30, 17,130.69 and 8,218.26

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Solution

The fourth proportional to 12,417.30, 17,130.69 and 8,218.26 is: 11,337.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,417.30 : 17,130.69 = 8,218.26 : x
  2. Step 2: Convert to fraction form
    12,417.30/17,130.69 = 8,218.26/x
  3. Step 3: Cross multiply
    12,417.30x = 17,130.69 × 8,218.26
  4. Step 4: Simplify right side
    12,417.30x = 140,784,464.40
  5. Step 5: Solve for x
    x = 140,784,464.40/12,417.30
  6. Step 6: Final answer
    x = 11,337.77

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Half scale
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Double scale
Find fourth proportional to 12,418.30, 17,132.07 and 8,219.26
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.