Home / 12,222.16-18,333.24-4,428.40

Finding the Fourth Proportional to 12,222.16, 18,333.24 and 4,428.40

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Solution

The fourth proportional to 12,222.16, 18,333.24 and 4,428.40 is: 6,642.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,222.16 : 18,333.24 = 4,428.40 : x
  2. Step 2: Convert to fraction form
    12,222.16/18,333.24 = 4,428.40/x
  3. Step 3: Cross multiply
    12,222.16x = 18,333.24 × 4,428.40
  4. Step 4: Simplify right side
    12,222.16x = 81,186,920.02
  5. Step 5: Solve for x
    x = 81,186,920.02/12,222.16
  6. Step 6: Final answer
    x = 6,642.60

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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.