Home / 13,146.28-18,140.10-7,557.64

Finding the Fourth Proportional to 13,146.28, 18,140.10 and 7,557.64

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Solution

The fourth proportional to 13,146.28, 18,140.10 and 7,557.64 is: 10,428.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.28 : 18,140.10 = 7,557.64 : x
  2. Step 2: Convert to fraction form
    13,146.28/18,140.10 = 7,557.64/x
  3. Step 3: Cross multiply
    13,146.28x = 18,140.10 × 7,557.64
  4. Step 4: Simplify right side
    13,146.28x = 137,096,345.36
  5. Step 5: Solve for x
    x = 137,096,345.36/13,146.28
  6. Step 6: Final answer
    x = 10,428.53

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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.