Home / 12,547.43-18,804.72-5,143.22

Finding the Fourth Proportional to 12,547.43, 18,804.72 and 5,143.22

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Solution

The fourth proportional to 12,547.43, 18,804.72 and 5,143.22 is: 7,708.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.43 : 18,804.72 = 5,143.22 : x
  2. Step 2: Convert to fraction form
    12,547.43/18,804.72 = 5,143.22/x
  3. Step 3: Cross multiply
    12,547.43x = 18,804.72 × 5,143.22
  4. Step 4: Simplify right side
    12,547.43x = 96,716,717.97
  5. Step 5: Solve for x
    x = 96,716,717.97/12,547.43
  6. Step 6: Final answer
    x = 7,708.09

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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.