Home / 15,905.40-23,861.85-4,812.18

Finding the Fourth Proportional to 15,905.40, 23,861.85 and 4,812.18

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Solution

The fourth proportional to 15,905.40, 23,861.85 and 4,812.18 is: 7,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.40 : 23,861.85 = 4,812.18 : x
  2. Step 2: Convert to fraction form
    15,905.40/23,861.85 = 4,812.18/x
  3. Step 3: Cross multiply
    15,905.40x = 23,861.85 × 4,812.18
  4. Step 4: Simplify right side
    15,905.40x = 114,827,517.33
  5. Step 5: Solve for x
    x = 114,827,517.33/15,905.40
  6. Step 6: Final answer
    x = 7,219.40

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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.