Home / 20,077.80-30,116.70-19,312.35

Finding the Fourth Proportional to 20,077.80, 30,116.70 and 19,312.35

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Solution

The fourth proportional to 20,077.80, 30,116.70 and 19,312.35 is: 28,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.80 : 30,116.70 = 19,312.35 : x
  2. Step 2: Convert to fraction form
    20,077.80/30,116.70 = 19,312.35/x
  3. Step 3: Cross multiply
    20,077.80x = 30,116.70 × 19,312.35
  4. Step 4: Simplify right side
    20,077.80x = 581,624,251.25
  5. Step 5: Solve for x
    x = 581,624,251.25/20,077.80
  6. Step 6: Final answer
    x = 28,968.53

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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.