Home / 21,401.80-29,527.78-12,447.40

Finding the Fourth Proportional to 21,401.80, 29,527.78 and 12,447.40

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Solution

The fourth proportional to 21,401.80, 29,527.78 and 12,447.40 is: 17,173.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.80 : 29,527.78 = 12,447.40 : x
  2. Step 2: Convert to fraction form
    21,401.80/29,527.78 = 12,447.40/x
  3. Step 3: Cross multiply
    21,401.80x = 29,527.78 × 12,447.40
  4. Step 4: Simplify right side
    21,401.80x = 367,544,088.77
  5. Step 5: Solve for x
    x = 367,544,088.77/21,401.80
  6. Step 6: Final answer
    x = 17,173.51

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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.