Home / 12,438.02-17,165.68-9,288.74

Finding the Fourth Proportional to 12,438.02, 17,165.68 and 9,288.74

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Solution

The fourth proportional to 12,438.02, 17,165.68 and 9,288.74 is: 12,819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.02 : 17,165.68 = 9,288.74 : x
  2. Step 2: Convert to fraction form
    12,438.02/17,165.68 = 9,288.74/x
  3. Step 3: Cross multiply
    12,438.02x = 17,165.68 × 9,288.74
  4. Step 4: Simplify right side
    12,438.02x = 159,447,538.44
  5. Step 5: Solve for x
    x = 159,447,538.44/12,438.02
  6. Step 6: Final answer
    x = 12,819.37

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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.