Home / 18,398.72-25,390.36-10,015.28

Finding the Fourth Proportional to 18,398.72, 25,390.36 and 10,015.28

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Solution

The fourth proportional to 18,398.72, 25,390.36 and 10,015.28 is: 13,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.72 : 25,390.36 = 10,015.28 : x
  2. Step 2: Convert to fraction form
    18,398.72/25,390.36 = 10,015.28/x
  3. Step 3: Cross multiply
    18,398.72x = 25,390.36 × 10,015.28
  4. Step 4: Simplify right side
    18,398.72x = 254,291,564.70
  5. Step 5: Solve for x
    x = 254,291,564.70/18,398.72
  6. Step 6: Final answer
    x = 13,821.16

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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.