Home / 11,320.86-15,620.13-6,603.42

Finding the Fourth Proportional to 11,320.86, 15,620.13 and 6,603.42

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Solution

The fourth proportional to 11,320.86, 15,620.13 and 6,603.42 is: 9,111.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.86 : 15,620.13 = 6,603.42 : x
  2. Step 2: Convert to fraction form
    11,320.86/15,620.13 = 6,603.42/x
  3. Step 3: Cross multiply
    11,320.86x = 15,620.13 × 6,603.42
  4. Step 4: Simplify right side
    11,320.86x = 103,146,278.84
  5. Step 5: Solve for x
    x = 103,146,278.84/11,320.86
  6. Step 6: Final answer
    x = 9,111.17

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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.