Home / 28,140.48-38,832.96-15,564.96

Finding the Fourth Proportional to 28,140.48, 38,832.96 and 15,564.96

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Solution

The fourth proportional to 28,140.48, 38,832.96 and 15,564.96 is: 21,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.48 : 38,832.96 = 15,564.96 : x
  2. Step 2: Convert to fraction form
    28,140.48/38,832.96 = 15,564.96/x
  3. Step 3: Cross multiply
    28,140.48x = 38,832.96 × 15,564.96
  4. Step 4: Simplify right side
    28,140.48x = 604,433,469.08
  5. Step 5: Solve for x
    x = 604,433,469.08/28,140.48
  6. Step 6: Final answer
    x = 21,479.15

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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.