Home / 13,681.24-18,959.43-13,418.76

Finding the Fourth Proportional to 13,681.24, 18,959.43 and 13,418.76

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Solution

The fourth proportional to 13,681.24, 18,959.43 and 13,418.76 is: 18,595.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.24 : 18,959.43 = 13,418.76 : x
  2. Step 2: Convert to fraction form
    13,681.24/18,959.43 = 13,418.76/x
  3. Step 3: Cross multiply
    13,681.24x = 18,959.43 × 13,418.76
  4. Step 4: Simplify right side
    13,681.24x = 254,412,040.91
  5. Step 5: Solve for x
    x = 254,412,040.91/13,681.24
  6. Step 6: Final answer
    x = 18,595.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.