Home / 13,389.12-18,477.36-8,084.88

Finding the Fourth Proportional to 13,389.12, 18,477.36 and 8,084.88

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Solution

The fourth proportional to 13,389.12, 18,477.36 and 8,084.88 is: 11,157.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.12 : 18,477.36 = 8,084.88 : x
  2. Step 2: Convert to fraction form
    13,389.12/18,477.36 = 8,084.88/x
  3. Step 3: Cross multiply
    13,389.12x = 18,477.36 × 8,084.88
  4. Step 4: Simplify right side
    13,389.12x = 149,387,238.32
  5. Step 5: Solve for x
    x = 149,387,238.32/13,389.12
  6. Step 6: Final answer
    x = 11,157.36

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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.