Home / 11,488.86-15,856.34-7,015.21

Finding the Fourth Proportional to 11,488.86, 15,856.34 and 7,015.21

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Solution

The fourth proportional to 11,488.86, 15,856.34 and 7,015.21 is: 9,682.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,488.86 : 15,856.34 = 7,015.21 : x
  2. Step 2: Convert to fraction form
    11,488.86/15,856.34 = 7,015.21/x
  3. Step 3: Cross multiply
    11,488.86x = 15,856.34 × 7,015.21
  4. Step 4: Simplify right side
    11,488.86x = 111,235,549.27
  5. Step 5: Solve for x
    x = 111,235,549.27/11,488.86
  6. Step 6: Final answer
    x = 9,682.03

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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.