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Finding the Fourth Proportional to 18,371.01, 25,352.41 and 9,987.51

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Solution

The fourth proportional to 18,371.01, 25,352.41 and 9,987.51 is: 13,782.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,371.01 : 25,352.41 = 9,987.51 : x
  2. Step 2: Convert to fraction form
    18,371.01/25,352.41 = 9,987.51/x
  3. Step 3: Cross multiply
    18,371.01x = 25,352.41 × 9,987.51
  4. Step 4: Simplify right side
    18,371.01x = 253,207,448.40
  5. Step 5: Solve for x
    x = 253,207,448.40/18,371.01
  6. Step 6: Final answer
    x = 13,782.99

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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.