Home / 15,518.89-21,409.14-11,927.43

Finding the Fourth Proportional to 15,518.89, 21,409.14 and 11,927.43

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Solution

The fourth proportional to 15,518.89, 21,409.14 and 11,927.43 is: 16,454.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.89 : 21,409.14 = 11,927.43 : x
  2. Step 2: Convert to fraction form
    15,518.89/21,409.14 = 11,927.43/x
  3. Step 3: Cross multiply
    15,518.89x = 21,409.14 × 11,927.43
  4. Step 4: Simplify right side
    15,518.89x = 255,355,902.59
  5. Step 5: Solve for x
    x = 255,355,902.59/15,518.89
  6. Step 6: Final answer
    x = 16,454.52

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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.