Home / 13,113.64-18,096.90-7,447.72

Finding the Fourth Proportional to 13,113.64, 18,096.90 and 7,447.72

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Solution

The fourth proportional to 13,113.64, 18,096.90 and 7,447.72 is: 10,277.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.64 : 18,096.90 = 7,447.72 : x
  2. Step 2: Convert to fraction form
    13,113.64/18,096.90 = 7,447.72/x
  3. Step 3: Cross multiply
    13,113.64x = 18,096.90 × 7,447.72
  4. Step 4: Simplify right side
    13,113.64x = 134,780,644.07
  5. Step 5: Solve for x
    x = 134,780,644.07/13,113.64
  6. Step 6: Final answer
    x = 10,277.90

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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.