Home / 11,152.78-15,377.37-9,637.63

Finding the Fourth Proportional to 11,152.78, 15,377.37 and 9,637.63

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Solution

The fourth proportional to 11,152.78, 15,377.37 and 9,637.63 is: 13,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.78 : 15,377.37 = 9,637.63 : x
  2. Step 2: Convert to fraction form
    11,152.78/15,377.37 = 9,637.63/x
  3. Step 3: Cross multiply
    11,152.78x = 15,377.37 × 9,637.63
  4. Step 4: Simplify right side
    11,152.78x = 148,201,402.43
  5. Step 5: Solve for x
    x = 148,201,402.43/11,152.78
  6. Step 6: Final answer
    x = 13,288.29

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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.