Home / 20,631.84-30,948.16-5,049.60

Finding the Fourth Proportional to 20,631.84, 30,948.16 and 5,049.60

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Solution

The fourth proportional to 20,631.84, 30,948.16 and 5,049.60 is: 7,574.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.84 : 30,948.16 = 5,049.60 : x
  2. Step 2: Convert to fraction form
    20,631.84/30,948.16 = 5,049.60/x
  3. Step 3: Cross multiply
    20,631.84x = 30,948.16 × 5,049.60
  4. Step 4: Simplify right side
    20,631.84x = 156,275,828.74
  5. Step 5: Solve for x
    x = 156,275,828.74/20,631.84
  6. Step 6: Final answer
    x = 7,574.50

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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.