Home / 19,542.08-26,959.68-13,172.78

Finding the Fourth Proportional to 19,542.08, 26,959.68 and 13,172.78

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Solution

The fourth proportional to 19,542.08, 26,959.68 and 13,172.78 is: 18,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,542.08 : 26,959.68 = 13,172.78 : x
  2. Step 2: Convert to fraction form
    19,542.08/26,959.68 = 13,172.78/x
  3. Step 3: Cross multiply
    19,542.08x = 26,959.68 × 13,172.78
  4. Step 4: Simplify right side
    19,542.08x = 355,133,798.71
  5. Step 5: Solve for x
    x = 355,133,798.71/19,542.08
  6. Step 6: Final answer
    x = 18,172.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.