Home / 12,541.40-18,812.10-4,222.70

Finding the Fourth Proportional to 12,541.40, 18,812.10 and 4,222.70

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Solution

The fourth proportional to 12,541.40, 18,812.10 and 4,222.70 is: 6,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,541.40 : 18,812.10 = 4,222.70 : x
  2. Step 2: Convert to fraction form
    12,541.40/18,812.10 = 4,222.70/x
  3. Step 3: Cross multiply
    12,541.40x = 18,812.10 × 4,222.70
  4. Step 4: Simplify right side
    12,541.40x = 79,437,854.67
  5. Step 5: Solve for x
    x = 79,437,854.67/12,541.40
  6. Step 6: Final answer
    x = 6,334.05

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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.