Home / 19,990.74-27,578.53-11,490.92

Finding the Fourth Proportional to 19,990.74, 27,578.53 and 11,490.92

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Solution

The fourth proportional to 19,990.74, 27,578.53 and 11,490.92 is: 15,852.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.74 : 27,578.53 = 11,490.92 : x
  2. Step 2: Convert to fraction form
    19,990.74/27,578.53 = 11,490.92/x
  3. Step 3: Cross multiply
    19,990.74x = 27,578.53 × 11,490.92
  4. Step 4: Simplify right side
    19,990.74x = 316,902,681.95
  5. Step 5: Solve for x
    x = 316,902,681.95/19,990.74
  6. Step 6: Final answer
    x = 15,852.47

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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.