Home / 20,383.20-30,574.80-14,478.30

Finding the Fourth Proportional to 20,383.20, 30,574.80 and 14,478.30

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Solution

The fourth proportional to 20,383.20, 30,574.80 and 14,478.30 is: 21,717.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.20 : 30,574.80 = 14,478.30 : x
  2. Step 2: Convert to fraction form
    20,383.20/30,574.80 = 14,478.30/x
  3. Step 3: Cross multiply
    20,383.20x = 30,574.80 × 14,478.30
  4. Step 4: Simplify right side
    20,383.20x = 442,671,126.84
  5. Step 5: Solve for x
    x = 442,671,126.84/20,383.20
  6. Step 6: Final answer
    x = 21,717.45

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Similar ratio
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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.