Home / 20,672.30-28,528.06-11,719.58

Finding the Fourth Proportional to 20,672.30, 28,528.06 and 11,719.58

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Solution

The fourth proportional to 20,672.30, 28,528.06 and 11,719.58 is: 16,173.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.30 : 28,528.06 = 11,719.58 : x
  2. Step 2: Convert to fraction form
    20,672.30/28,528.06 = 11,719.58/x
  3. Step 3: Cross multiply
    20,672.30x = 28,528.06 × 11,719.58
  4. Step 4: Simplify right side
    20,672.30x = 334,336,881.41
  5. Step 5: Solve for x
    x = 334,336,881.41/20,672.30
  6. Step 6: Final answer
    x = 16,173.18

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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.