Home / 15,812.36-21,811.92-10,145.10

Finding the Fourth Proportional to 15,812.36, 21,811.92 and 10,145.10

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Solution

The fourth proportional to 15,812.36, 21,811.92 and 10,145.10 is: 13,994.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.36 : 21,811.92 = 10,145.10 : x
  2. Step 2: Convert to fraction form
    15,812.36/21,811.92 = 10,145.10/x
  3. Step 3: Cross multiply
    15,812.36x = 21,811.92 × 10,145.10
  4. Step 4: Simplify right side
    15,812.36x = 221,284,109.59
  5. Step 5: Solve for x
    x = 221,284,109.59/15,812.36
  6. Step 6: Final answer
    x = 13,994.38

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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.