Home / 14,276.45-19,707.03-12,781.80

Finding the Fourth Proportional to 14,276.45, 19,707.03 and 12,781.80

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Solution

The fourth proportional to 14,276.45, 19,707.03 and 12,781.80 is: 17,643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,276.45 : 19,707.03 = 12,781.80 : x
  2. Step 2: Convert to fraction form
    14,276.45/19,707.03 = 12,781.80/x
  3. Step 3: Cross multiply
    14,276.45x = 19,707.03 × 12,781.80
  4. Step 4: Simplify right side
    14,276.45x = 251,891,316.05
  5. Step 5: Solve for x
    x = 251,891,316.05/14,276.45
  6. Step 6: Final answer
    x = 17,643.83

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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.