Home / 15,865.56-21,902.58-11,611.89

Finding the Fourth Proportional to 15,865.56, 21,902.58 and 11,611.89

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Solution

The fourth proportional to 15,865.56, 21,902.58 and 11,611.89 is: 16,030.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.56 : 21,902.58 = 11,611.89 : x
  2. Step 2: Convert to fraction form
    15,865.56/21,902.58 = 11,611.89/x
  3. Step 3: Cross multiply
    15,865.56x = 21,902.58 × 11,611.89
  4. Step 4: Simplify right side
    15,865.56x = 254,330,349.68
  5. Step 5: Solve for x
    x = 254,330,349.68/15,865.56
  6. Step 6: Final answer
    x = 16,030.34

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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.