Home / 19,520.18-26,931.12-11,021.24

Finding the Fourth Proportional to 19,520.18, 26,931.12 and 11,021.24

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Solution

The fourth proportional to 19,520.18, 26,931.12 and 11,021.24 is: 15,205.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,520.18 : 26,931.12 = 11,021.24 : x
  2. Step 2: Convert to fraction form
    19,520.18/26,931.12 = 11,021.24/x
  3. Step 3: Cross multiply
    19,520.18x = 26,931.12 × 11,021.24
  4. Step 4: Simplify right side
    19,520.18x = 296,814,336.99
  5. Step 5: Solve for x
    x = 296,814,336.99/19,520.18
  6. Step 6: Final answer
    x = 15,205.51

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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.