Home / 8,422.02-12,690.09-6,993.18

Finding the Fourth Proportional to 8,422.02, 12,690.09 and 6,993.18

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Solution

The fourth proportional to 8,422.02, 12,690.09 and 6,993.18 is: 10,537.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.02 : 12,690.09 = 6,993.18 : x
  2. Step 2: Convert to fraction form
    8,422.02/12,690.09 = 6,993.18/x
  3. Step 3: Cross multiply
    8,422.02x = 12,690.09 × 6,993.18
  4. Step 4: Simplify right side
    8,422.02x = 88,744,083.59
  5. Step 5: Solve for x
    x = 88,744,083.59/8,422.02
  6. Step 6: Final answer
    x = 10,537.15

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Half scale
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Double scale
Find fourth proportional to 8,423.02, 12,691.60 and 6,994.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.