Home / 27,985.32-41,985.20-10,455.28

Finding the Fourth Proportional to 27,985.32, 41,985.20 and 10,455.28

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Solution

The fourth proportional to 27,985.32, 41,985.20 and 10,455.28 is: 15,685.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.32 : 41,985.20 = 10,455.28 : x
  2. Step 2: Convert to fraction form
    27,985.32/41,985.20 = 10,455.28/x
  3. Step 3: Cross multiply
    27,985.32x = 41,985.20 × 10,455.28
  4. Step 4: Simplify right side
    27,985.32x = 438,967,021.86
  5. Step 5: Solve for x
    x = 438,967,021.86/27,985.32
  6. Step 6: Final answer
    x = 15,685.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.