Home / 13,099.46-18,076.70-7,131.17

Finding the Fourth Proportional to 13,099.46, 18,076.70 and 7,131.17

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Solution

The fourth proportional to 13,099.46, 18,076.70 and 7,131.17 is: 9,840.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.46 : 18,076.70 = 7,131.17 : x
  2. Step 2: Convert to fraction form
    13,099.46/18,076.70 = 7,131.17/x
  3. Step 3: Cross multiply
    13,099.46x = 18,076.70 × 7,131.17
  4. Step 4: Simplify right side
    13,099.46x = 128,908,083.76
  5. Step 5: Solve for x
    x = 128,908,083.76/13,099.46
  6. Step 6: Final answer
    x = 9,840.72

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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.