Home / 13,718.16-18,937.60-9,188.64

Finding the Fourth Proportional to 13,718.16, 18,937.60 and 9,188.64

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Solution

The fourth proportional to 13,718.16, 18,937.60 and 9,188.64 is: 12,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.16 : 18,937.60 = 9,188.64 : x
  2. Step 2: Convert to fraction form
    13,718.16/18,937.60 = 9,188.64/x
  3. Step 3: Cross multiply
    13,718.16x = 18,937.60 × 9,188.64
  4. Step 4: Simplify right side
    13,718.16x = 174,010,765.89
  5. Step 5: Solve for x
    x = 174,010,765.89/13,718.16
  6. Step 6: Final answer
    x = 12,684.70

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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.