Home / 28,056.28-38,718.48-15,481.84

Finding the Fourth Proportional to 28,056.28, 38,718.48 and 15,481.84

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Solution

The fourth proportional to 28,056.28, 38,718.48 and 15,481.84 is: 21,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,056.28 : 38,718.48 = 15,481.84 : x
  2. Step 2: Convert to fraction form
    28,056.28/38,718.48 = 15,481.84/x
  3. Step 3: Cross multiply
    28,056.28x = 38,718.48 × 15,481.84
  4. Step 4: Simplify right side
    28,056.28x = 599,433,312.40
  5. Step 5: Solve for x
    x = 599,433,312.40/28,056.28
  6. Step 6: Final answer
    x = 21,365.39

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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.