Home / 13,148.28-18,142.86-7,559.64

Finding the Fourth Proportional to 13,148.28, 18,142.86 and 7,559.64

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Solution

The fourth proportional to 13,148.28, 18,142.86 and 7,559.64 is: 10,431.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.28 : 18,142.86 = 7,559.64 : x
  2. Step 2: Convert to fraction form
    13,148.28/18,142.86 = 7,559.64/x
  3. Step 3: Cross multiply
    13,148.28x = 18,142.86 × 7,559.64
  4. Step 4: Simplify right side
    13,148.28x = 137,153,490.17
  5. Step 5: Solve for x
    x = 137,153,490.17/13,148.28
  6. Step 6: Final answer
    x = 10,431.29

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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.