Home / 14,723.89-20,318.95-8,439.91

Finding the Fourth Proportional to 14,723.89, 20,318.95 and 8,439.91

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Solution

The fourth proportional to 14,723.89, 20,318.95 and 8,439.91 is: 11,647.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,723.89 : 20,318.95 = 8,439.91 : x
  2. Step 2: Convert to fraction form
    14,723.89/20,318.95 = 8,439.91/x
  3. Step 3: Cross multiply
    14,723.89x = 20,318.95 × 8,439.91
  4. Step 4: Simplify right side
    14,723.89x = 171,490,028.80
  5. Step 5: Solve for x
    x = 171,490,028.80/14,723.89
  6. Step 6: Final answer
    x = 11,647.06

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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.