Home / 14,355.81-19,811.25-8,690.49

Finding the Fourth Proportional to 14,355.81, 19,811.25 and 8,690.49

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Solution

The fourth proportional to 14,355.81, 19,811.25 and 8,690.49 is: 11,993.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355.81 : 19,811.25 = 8,690.49 : x
  2. Step 2: Convert to fraction form
    14,355.81/19,811.25 = 8,690.49/x
  3. Step 3: Cross multiply
    14,355.81x = 19,811.25 × 8,690.49
  4. Step 4: Simplify right side
    14,355.81x = 172,169,470.01
  5. Step 5: Solve for x
    x = 172,169,470.01/14,355.81
  6. Step 6: Final answer
    x = 11,993.02

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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.