Home / 13,135.46-18,120.67-8,888.01

Finding the Fourth Proportional to 13,135.46, 18,120.67 and 8,888.01

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Solution

The fourth proportional to 13,135.46, 18,120.67 and 8,888.01 is: 12,261.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.46 : 18,120.67 = 8,888.01 : x
  2. Step 2: Convert to fraction form
    13,135.46/18,120.67 = 8,888.01/x
  3. Step 3: Cross multiply
    13,135.46x = 18,120.67 × 8,888.01
  4. Step 4: Simplify right side
    13,135.46x = 161,056,696.17
  5. Step 5: Solve for x
    x = 161,056,696.17/13,135.46
  6. Step 6: Final answer
    x = 12,261.21

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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.