Home / 12,143.46-18,210.80-4,243.76

Finding the Fourth Proportional to 12,143.46, 18,210.80 and 4,243.76

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Solution

The fourth proportional to 12,143.46, 18,210.80 and 4,243.76 is: 6,364.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.46 : 18,210.80 = 4,243.76 : x
  2. Step 2: Convert to fraction form
    12,143.46/18,210.80 = 4,243.76/x
  3. Step 3: Cross multiply
    12,143.46x = 18,210.80 × 4,243.76
  4. Step 4: Simplify right side
    12,143.46x = 77,282,264.61
  5. Step 5: Solve for x
    x = 77,282,264.61/12,143.46
  6. Step 6: Final answer
    x = 6,364.11

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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.