Home / 13,498.62-18,639.81-8,471.55

Finding the Fourth Proportional to 13,498.62, 18,639.81 and 8,471.55

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Solution

The fourth proportional to 13,498.62, 18,639.81 and 8,471.55 is: 11,698.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.62 : 18,639.81 = 8,471.55 : x
  2. Step 2: Convert to fraction form
    13,498.62/18,639.81 = 8,471.55/x
  3. Step 3: Cross multiply
    13,498.62x = 18,639.81 × 8,471.55
  4. Step 4: Simplify right side
    13,498.62x = 157,908,082.41
  5. Step 5: Solve for x
    x = 157,908,082.41/13,498.62
  6. Step 6: Final answer
    x = 11,698.09

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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.