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Finding the Fourth Proportional to 12,804.81, 19,207.17 and 3,570.81

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Solution

The fourth proportional to 12,804.81, 19,207.17 and 3,570.81 is: 5,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,804.81 : 19,207.17 = 3,570.81 : x
  2. Step 2: Convert to fraction form
    12,804.81/19,207.17 = 3,570.81/x
  3. Step 3: Cross multiply
    12,804.81x = 19,207.17 × 3,570.81
  4. Step 4: Simplify right side
    12,804.81x = 68,585,154.71
  5. Step 5: Solve for x
    x = 68,585,154.71/12,804.81
  6. Step 6: Final answer
    x = 5,356.20

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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.