Home / 14,781.98-20,401.12-9,404.95

Finding the Fourth Proportional to 14,781.98, 20,401.12 and 9,404.95

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Solution

The fourth proportional to 14,781.98, 20,401.12 and 9,404.95 is: 12,980.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.98 : 20,401.12 = 9,404.95 : x
  2. Step 2: Convert to fraction form
    14,781.98/20,401.12 = 9,404.95/x
  3. Step 3: Cross multiply
    14,781.98x = 20,401.12 × 9,404.95
  4. Step 4: Simplify right side
    14,781.98x = 191,871,619.57
  5. Step 5: Solve for x
    x = 191,871,619.57/14,781.98
  6. Step 6: Final answer
    x = 12,980.10

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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.