Home / 12,938.04-17,840.36-8,739

Finding the Fourth Proportional to 12,938.04, 17,840.36 and 8,739

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Solution

The fourth proportional to 12,938.04, 17,840.36 and 8,739 is: 12,050.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.04 : 17,840.36 = 8,739 : x
  2. Step 2: Convert to fraction form
    12,938.04/17,840.36 = 8,739/x
  3. Step 3: Cross multiply
    12,938.04x = 17,840.36 × 8,739
  4. Step 4: Simplify right side
    12,938.04x = 155,906,906.04
  5. Step 5: Solve for x
    x = 155,906,906.04/12,938.04
  6. Step 6: Final answer
    x = 12,050.27

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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.