Home / 9,671.24-13,345.52-5,421.68

Finding the Fourth Proportional to 9,671.24, 13,345.52 and 5,421.68

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Solution

The fourth proportional to 9,671.24, 13,345.52 and 5,421.68 is: 7,481.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,671.24 : 13,345.52 = 5,421.68 : x
  2. Step 2: Convert to fraction form
    9,671.24/13,345.52 = 5,421.68/x
  3. Step 3: Cross multiply
    9,671.24x = 13,345.52 × 5,421.68
  4. Step 4: Simplify right side
    9,671.24x = 72,355,138.87
  5. Step 5: Solve for x
    x = 72,355,138.87/9,671.24
  6. Step 6: Final answer
    x = 7,481.47

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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.