Home / 13,541.28-20,190.28-12,384.16

Finding the Fourth Proportional to 13,541.28, 20,190.28 and 12,384.16

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Solution

The fourth proportional to 13,541.28, 20,190.28 and 12,384.16 is: 18,464.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,541.28 : 20,190.28 = 12,384.16 : x
  2. Step 2: Convert to fraction form
    13,541.28/20,190.28 = 12,384.16/x
  3. Step 3: Cross multiply
    13,541.28x = 20,190.28 × 12,384.16
  4. Step 4: Simplify right side
    13,541.28x = 250,039,657.96
  5. Step 5: Solve for x
    x = 250,039,657.96/13,541.28
  6. Step 6: Final answer
    x = 18,464.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.