Home / 12,210.57-18,303.51-4,812.15

Finding the Fourth Proportional to 12,210.57, 18,303.51 and 4,812.15

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Solution

The fourth proportional to 12,210.57, 18,303.51 and 4,812.15 is: 7,213.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.57 : 18,303.51 = 4,812.15 : x
  2. Step 2: Convert to fraction form
    12,210.57/18,303.51 = 4,812.15/x
  3. Step 3: Cross multiply
    12,210.57x = 18,303.51 × 4,812.15
  4. Step 4: Simplify right side
    12,210.57x = 88,079,235.65
  5. Step 5: Solve for x
    x = 88,079,235.65/12,210.57
  6. Step 6: Final answer
    x = 7,213.36

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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.