Home / 14,699.72-20,292.36-9,401.78

Finding the Fourth Proportional to 14,699.72, 20,292.36 and 9,401.78

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Solution

The fourth proportional to 14,699.72, 20,292.36 and 9,401.78 is: 12,978.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,699.72 : 20,292.36 = 9,401.78 : x
  2. Step 2: Convert to fraction form
    14,699.72/20,292.36 = 9,401.78/x
  3. Step 3: Cross multiply
    14,699.72x = 20,292.36 × 9,401.78
  4. Step 4: Simplify right side
    14,699.72x = 190,784,304.40
  5. Step 5: Solve for x
    x = 190,784,304.40/14,699.72
  6. Step 6: Final answer
    x = 12,978.77

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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.