Home / 19,434.40-26,818.68-11,479.20

Finding the Fourth Proportional to 19,434.40, 26,818.68 and 11,479.20

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Solution

The fourth proportional to 19,434.40, 26,818.68 and 11,479.20 is: 15,840.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,434.40 : 26,818.68 = 11,479.20 : x
  2. Step 2: Convert to fraction form
    19,434.40/26,818.68 = 11,479.20/x
  3. Step 3: Cross multiply
    19,434.40x = 26,818.68 × 11,479.20
  4. Step 4: Simplify right side
    19,434.40x = 307,856,991.46
  5. Step 5: Solve for x
    x = 307,856,991.46/19,434.40
  6. Step 6: Final answer
    x = 15,840.83

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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.