Home / 13,153.93-18,152.86-7,186.15

Finding the Fourth Proportional to 13,153.93, 18,152.86 and 7,186.15

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Solution

The fourth proportional to 13,153.93, 18,152.86 and 7,186.15 is: 9,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.93 : 18,152.86 = 7,186.15 : x
  2. Step 2: Convert to fraction form
    13,153.93/18,152.86 = 7,186.15/x
  3. Step 3: Cross multiply
    13,153.93x = 18,152.86 × 7,186.15
  4. Step 4: Simplify right side
    13,153.93x = 130,449,138.96
  5. Step 5: Solve for x
    x = 130,449,138.96/13,153.93
  6. Step 6: Final answer
    x = 9,917.13

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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.