Home / 12,637.20-18,971.40-7,957.20

Finding the Fourth Proportional to 12,637.20, 18,971.40 and 7,957.20

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Solution

The fourth proportional to 12,637.20, 18,971.40 and 7,957.20 is: 11,945.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.20 : 18,971.40 = 7,957.20 : x
  2. Step 2: Convert to fraction form
    12,637.20/18,971.40 = 7,957.20/x
  3. Step 3: Cross multiply
    12,637.20x = 18,971.40 × 7,957.20
  4. Step 4: Simplify right side
    12,637.20x = 150,959,224.08
  5. Step 5: Solve for x
    x = 150,959,224.08/12,637.20
  6. Step 6: Final answer
    x = 11,945.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.