Home / 12,340.12-18,510.16-4,020.12

Finding the Fourth Proportional to 12,340.12, 18,510.16 and 4,020.12

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Solution

The fourth proportional to 12,340.12, 18,510.16 and 4,020.12 is: 6,030.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.12 : 18,510.16 = 4,020.12 : x
  2. Step 2: Convert to fraction form
    12,340.12/18,510.16 = 4,020.12/x
  3. Step 3: Cross multiply
    12,340.12x = 18,510.16 × 4,020.12
  4. Step 4: Simplify right side
    12,340.12x = 74,413,120.74
  5. Step 5: Solve for x
    x = 74,413,120.74/12,340.12
  6. Step 6: Final answer
    x = 6,030.18

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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.