Home / 21,653.13-32,490.45-12,159.54

Finding the Fourth Proportional to 21,653.13, 32,490.45 and 12,159.54

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Solution

The fourth proportional to 21,653.13, 32,490.45 and 12,159.54 is: 18,245.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.13 : 32,490.45 = 12,159.54 : x
  2. Step 2: Convert to fraction form
    21,653.13/32,490.45 = 12,159.54/x
  3. Step 3: Cross multiply
    21,653.13x = 32,490.45 × 12,159.54
  4. Step 4: Simplify right side
    21,653.13x = 395,068,926.39
  5. Step 5: Solve for x
    x = 395,068,926.39/21,653.13
  6. Step 6: Final answer
    x = 18,245.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.