Home / 12,439.02-17,167.06-9,289.74

Finding the Fourth Proportional to 12,439.02, 17,167.06 and 9,289.74

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Solution

The fourth proportional to 12,439.02, 17,167.06 and 9,289.74 is: 12,820.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.02 : 17,167.06 = 9,289.74 : x
  2. Step 2: Convert to fraction form
    12,439.02/17,167.06 = 9,289.74/x
  3. Step 3: Cross multiply
    12,439.02x = 17,167.06 × 9,289.74
  4. Step 4: Simplify right side
    12,439.02x = 159,477,523.96
  5. Step 5: Solve for x
    x = 159,477,523.96/12,439.02
  6. Step 6: Final answer
    x = 12,820.75

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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.