Home / 11,355.18-15,653.91-7,987.54

Finding the Fourth Proportional to 11,355.18, 15,653.91 and 7,987.54

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Solution

The fourth proportional to 11,355.18, 15,653.91 and 7,987.54 is: 11,011.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.18 : 15,653.91 = 7,987.54 : x
  2. Step 2: Convert to fraction form
    11,355.18/15,653.91 = 7,987.54/x
  3. Step 3: Cross multiply
    11,355.18x = 15,653.91 × 7,987.54
  4. Step 4: Simplify right side
    11,355.18x = 125,036,212.31
  5. Step 5: Solve for x
    x = 125,036,212.31/11,355.18
  6. Step 6: Final answer
    x = 11,011.38

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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.