Home / 19,499.28-26,918.94-13,520.58

Finding the Fourth Proportional to 19,499.28, 26,918.94 and 13,520.58

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Solution

The fourth proportional to 19,499.28, 26,918.94 and 13,520.58 is: 18,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,499.28 : 26,918.94 = 13,520.58 : x
  2. Step 2: Convert to fraction form
    19,499.28/26,918.94 = 13,520.58/x
  3. Step 3: Cross multiply
    19,499.28x = 26,918.94 × 13,520.58
  4. Step 4: Simplify right side
    19,499.28x = 363,959,681.79
  5. Step 5: Solve for x
    x = 363,959,681.79/19,499.28
  6. Step 6: Final answer
    x = 18,665.29

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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.