Home / 21,401.55-29,473.34-20,943.63

Finding the Fourth Proportional to 21,401.55, 29,473.34 and 20,943.63

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Solution

The fourth proportional to 21,401.55, 29,473.34 and 20,943.63 is: 28,842.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.55 : 29,473.34 = 20,943.63 : x
  2. Step 2: Convert to fraction form
    21,401.55/29,473.34 = 20,943.63/x
  3. Step 3: Cross multiply
    21,401.55x = 29,473.34 × 20,943.63
  4. Step 4: Simplify right side
    21,401.55x = 617,278,623.11
  5. Step 5: Solve for x
    x = 617,278,623.11/21,401.55
  6. Step 6: Final answer
    x = 28,842.71

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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.