Home / 19,087.68-26,361-13,134.72

Finding the Fourth Proportional to 19,087.68, 26,361 and 13,134.72

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Solution

The fourth proportional to 19,087.68, 26,361 and 13,134.72 is: 18,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,087.68 : 26,361 = 13,134.72 : x
  2. Step 2: Convert to fraction form
    19,087.68/26,361 = 13,134.72/x
  3. Step 3: Cross multiply
    19,087.68x = 26,361 × 13,134.72
  4. Step 4: Simplify right side
    19,087.68x = 346,244,353.92
  5. Step 5: Solve for x
    x = 346,244,353.92/19,087.68
  6. Step 6: Final answer
    x = 18,139.68

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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.