Home / 21,762.07-30,028.97-13,261.10

Finding the Fourth Proportional to 21,762.07, 30,028.97 and 13,261.10

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Solution

The fourth proportional to 21,762.07, 30,028.97 and 13,261.10 is: 18,298.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.07 : 30,028.97 = 13,261.10 : x
  2. Step 2: Convert to fraction form
    21,762.07/30,028.97 = 13,261.10/x
  3. Step 3: Cross multiply
    21,762.07x = 30,028.97 × 13,261.10
  4. Step 4: Simplify right side
    21,762.07x = 398,217,057.07
  5. Step 5: Solve for x
    x = 398,217,057.07/21,762.07
  6. Step 6: Final answer
    x = 18,298.68

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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.