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Finding the Fourth Proportional to 12,740.33, 17,579.93 and 7,289.30

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Solution

The fourth proportional to 12,740.33, 17,579.93 and 7,289.30 is: 10,058.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.33 : 17,579.93 = 7,289.30 : x
  2. Step 2: Convert to fraction form
    12,740.33/17,579.93 = 7,289.30/x
  3. Step 3: Cross multiply
    12,740.33x = 17,579.93 × 7,289.30
  4. Step 4: Simplify right side
    12,740.33x = 128,145,259.40
  5. Step 5: Solve for x
    x = 128,145,259.40/12,740.33
  6. Step 6: Final answer
    x = 10,058.24

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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.