Home / 19,990.20-27,586.47-11,038.32

Finding the Fourth Proportional to 19,990.20, 27,586.47 and 11,038.32

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Solution

The fourth proportional to 19,990.20, 27,586.47 and 11,038.32 is: 15,232.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.20 : 27,586.47 = 11,038.32 : x
  2. Step 2: Convert to fraction form
    19,990.20/27,586.47 = 11,038.32/x
  3. Step 3: Cross multiply
    19,990.20x = 27,586.47 × 11,038.32
  4. Step 4: Simplify right side
    19,990.20x = 304,508,283.53
  5. Step 5: Solve for x
    x = 304,508,283.53/19,990.20
  6. Step 6: Final answer
    x = 15,232.88

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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.