Home / 15,099.38-20,836.73-8,384.81

Finding the Fourth Proportional to 15,099.38, 20,836.73 and 8,384.81

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Solution

The fourth proportional to 15,099.38, 20,836.73 and 8,384.81 is: 11,570.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.38 : 20,836.73 = 8,384.81 : x
  2. Step 2: Convert to fraction form
    15,099.38/20,836.73 = 8,384.81/x
  3. Step 3: Cross multiply
    15,099.38x = 20,836.73 × 8,384.81
  4. Step 4: Simplify right side
    15,099.38x = 174,711,980.15
  5. Step 5: Solve for x
    x = 174,711,980.15/15,099.38
  6. Step 6: Final answer
    x = 11,570.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.