Home / 21,419.85-32,113.30-10,881.21

Finding the Fourth Proportional to 21,419.85, 32,113.30 and 10,881.21

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Solution

The fourth proportional to 21,419.85, 32,113.30 and 10,881.21 is: 16,313.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.85 : 32,113.30 = 10,881.21 : x
  2. Step 2: Convert to fraction form
    21,419.85/32,113.30 = 10,881.21/x
  3. Step 3: Cross multiply
    21,419.85x = 32,113.30 × 10,881.21
  4. Step 4: Simplify right side
    21,419.85x = 349,431,561.09
  5. Step 5: Solve for x
    x = 349,431,561.09/21,419.85
  6. Step 6: Final answer
    x = 16,313.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.