Home / 18,828.60-25,968.96-13,791

Finding the Fourth Proportional to 18,828.60, 25,968.96 and 13,791

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Solution

The fourth proportional to 18,828.60, 25,968.96 and 13,791 is: 19,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.60 : 25,968.96 = 13,791 : x
  2. Step 2: Convert to fraction form
    18,828.60/25,968.96 = 13,791/x
  3. Step 3: Cross multiply
    18,828.60x = 25,968.96 × 13,791
  4. Step 4: Simplify right side
    18,828.60x = 358,137,927.36
  5. Step 5: Solve for x
    x = 358,137,927.36/18,828.60
  6. Step 6: Final answer
    x = 19,020.95

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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.