Home / 19,999.02-27,580.32-13,635.12

Finding the Fourth Proportional to 19,999.02, 27,580.32 and 13,635.12

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Solution

The fourth proportional to 19,999.02, 27,580.32 and 13,635.12 is: 18,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.02 : 27,580.32 = 13,635.12 : x
  2. Step 2: Convert to fraction form
    19,999.02/27,580.32 = 13,635.12/x
  3. Step 3: Cross multiply
    19,999.02x = 27,580.32 × 13,635.12
  4. Step 4: Simplify right side
    19,999.02x = 376,060,972.84
  5. Step 5: Solve for x
    x = 376,060,972.84/19,999.02
  6. Step 6: Final answer
    x = 18,803.97

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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.