Home / 12,285.28-16,948.87-7,561.36

Finding the Fourth Proportional to 12,285.28, 16,948.87 and 7,561.36

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Solution

The fourth proportional to 12,285.28, 16,948.87 and 7,561.36 is: 10,431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.28 : 16,948.87 = 7,561.36 : x
  2. Step 2: Convert to fraction form
    12,285.28/16,948.87 = 7,561.36/x
  3. Step 3: Cross multiply
    12,285.28x = 16,948.87 × 7,561.36
  4. Step 4: Simplify right side
    12,285.28x = 128,156,507.66
  5. Step 5: Solve for x
    x = 128,156,507.66/12,285.28
  6. Step 6: Final answer
    x = 10,431.71

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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.