Home / 15,520.50-21,440.07-13,841.37

Finding the Fourth Proportional to 15,520.50, 21,440.07 and 13,841.37

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Solution

The fourth proportional to 15,520.50, 21,440.07 and 13,841.37 is: 19,120.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,520.50 : 21,440.07 = 13,841.37 : x
  2. Step 2: Convert to fraction form
    15,520.50/21,440.07 = 13,841.37/x
  3. Step 3: Cross multiply
    15,520.50x = 21,440.07 × 13,841.37
  4. Step 4: Simplify right side
    15,520.50x = 296,759,941.70
  5. Step 5: Solve for x
    x = 296,759,941.70/15,520.50
  6. Step 6: Final answer
    x = 19,120.51

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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.