Home / 9,712.48-13,404.40-5,521.76

Finding the Fourth Proportional to 9,712.48, 13,404.40 and 5,521.76

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Solution

The fourth proportional to 9,712.48, 13,404.40 and 5,521.76 is: 7,620.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,712.48 : 13,404.40 = 5,521.76 : x
  2. Step 2: Convert to fraction form
    9,712.48/13,404.40 = 5,521.76/x
  3. Step 3: Cross multiply
    9,712.48x = 13,404.40 × 5,521.76
  4. Step 4: Simplify right side
    9,712.48x = 74,015,879.74
  5. Step 5: Solve for x
    x = 74,015,879.74/9,712.48
  6. Step 6: Final answer
    x = 7,620.70

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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.