Home / 18,721.94-27,920.53-15,966.32

Finding the Fourth Proportional to 18,721.94, 27,920.53 and 15,966.32

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Solution

The fourth proportional to 18,721.94, 27,920.53 and 15,966.32 is: 23,811.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.94 : 27,920.53 = 15,966.32 : x
  2. Step 2: Convert to fraction form
    18,721.94/27,920.53 = 15,966.32/x
  3. Step 3: Cross multiply
    18,721.94x = 27,920.53 × 15,966.32
  4. Step 4: Simplify right side
    18,721.94x = 445,788,116.55
  5. Step 5: Solve for x
    x = 445,788,116.55/18,721.94
  6. Step 6: Final answer
    x = 23,811.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.