Home / 12,218.60-18,335.10-4,426.40

Finding the Fourth Proportional to 12,218.60, 18,335.10 and 4,426.40

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Solution

The fourth proportional to 12,218.60, 18,335.10 and 4,426.40 is: 6,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.60 : 18,335.10 = 4,426.40 : x
  2. Step 2: Convert to fraction form
    12,218.60/18,335.10 = 4,426.40/x
  3. Step 3: Cross multiply
    12,218.60x = 18,335.10 × 4,426.40
  4. Step 4: Simplify right side
    12,218.60x = 81,158,486.64
  5. Step 5: Solve for x
    x = 81,158,486.64/12,218.60
  6. Step 6: Final answer
    x = 6,642.21

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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.