Home / 27,999.77-42,005.81-20,581.74

Finding the Fourth Proportional to 27,999.77, 42,005.81 and 20,581.74

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Solution

The fourth proportional to 27,999.77, 42,005.81 and 20,581.74 is: 30,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.77 : 42,005.81 = 20,581.74 : x
  2. Step 2: Convert to fraction form
    27,999.77/42,005.81 = 20,581.74/x
  3. Step 3: Cross multiply
    27,999.77x = 42,005.81 × 20,581.74
  4. Step 4: Simplify right side
    27,999.77x = 864,552,644.03
  5. Step 5: Solve for x
    x = 864,552,644.03/27,999.77
  6. Step 6: Final answer
    x = 30,877.13

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1.5x scale

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.