Home / 11,335.90-15,637.38-7,240.06

Finding the Fourth Proportional to 11,335.90, 15,637.38 and 7,240.06

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Solution

The fourth proportional to 11,335.90, 15,637.38 and 7,240.06 is: 9,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,335.90 : 15,637.38 = 7,240.06 : x
  2. Step 2: Convert to fraction form
    11,335.90/15,637.38 = 7,240.06/x
  3. Step 3: Cross multiply
    11,335.90x = 15,637.38 × 7,240.06
  4. Step 4: Simplify right side
    11,335.90x = 113,215,569.44
  5. Step 5: Solve for x
    x = 113,215,569.44/11,335.90
  6. Step 6: Final answer
    x = 9,987.35

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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.