Home / 14,215.68-19,612.80-8,625.60

Finding the Fourth Proportional to 14,215.68, 19,612.80 and 8,625.60

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Solution

The fourth proportional to 14,215.68, 19,612.80 and 8,625.60 is: 11,900.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.68 : 19,612.80 = 8,625.60 : x
  2. Step 2: Convert to fraction form
    14,215.68/19,612.80 = 8,625.60/x
  3. Step 3: Cross multiply
    14,215.68x = 19,612.80 × 8,625.60
  4. Step 4: Simplify right side
    14,215.68x = 169,172,167.68
  5. Step 5: Solve for x
    x = 169,172,167.68/14,215.68
  6. Step 6: Final answer
    x = 11,900.39

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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.