Home / 20,298.64-30,441.81-7,817.70

Finding the Fourth Proportional to 20,298.64, 30,441.81 and 7,817.70

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Solution

The fourth proportional to 20,298.64, 30,441.81 and 7,817.70 is: 11,724.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,298.64 : 30,441.81 = 7,817.70 : x
  2. Step 2: Convert to fraction form
    20,298.64/30,441.81 = 7,817.70/x
  3. Step 3: Cross multiply
    20,298.64x = 30,441.81 × 7,817.70
  4. Step 4: Simplify right side
    20,298.64x = 237,984,938.04
  5. Step 5: Solve for x
    x = 237,984,938.04/20,298.64
  6. Step 6: Final answer
    x = 11,724.18

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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.