Home / 13,384.16-18,478.81-8,606.25

Finding the Fourth Proportional to 13,384.16, 18,478.81 and 8,606.25

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Solution

The fourth proportional to 13,384.16, 18,478.81 and 8,606.25 is: 11,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.16 : 18,478.81 = 8,606.25 : x
  2. Step 2: Convert to fraction form
    13,384.16/18,478.81 = 8,606.25/x
  3. Step 3: Cross multiply
    13,384.16x = 18,478.81 × 8,606.25
  4. Step 4: Simplify right side
    13,384.16x = 159,033,258.56
  5. Step 5: Solve for x
    x = 159,033,258.56/13,384.16
  6. Step 6: Final answer
    x = 11,882.20

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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.