Home / 28,015.50-38,663.82-15,442.68

Finding the Fourth Proportional to 28,015.50, 38,663.82 and 15,442.68

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Solution

The fourth proportional to 28,015.50, 38,663.82 and 15,442.68 is: 21,312.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.50 : 38,663.82 = 15,442.68 : x
  2. Step 2: Convert to fraction form
    28,015.50/38,663.82 = 15,442.68/x
  3. Step 3: Cross multiply
    28,015.50x = 38,663.82 × 15,442.68
  4. Step 4: Simplify right side
    28,015.50x = 597,072,999.84
  5. Step 5: Solve for x
    x = 597,072,999.84/28,015.50
  6. Step 6: Final answer
    x = 21,312.24

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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.