Home / 15,639.35-21,582.62-8,565.77

Finding the Fourth Proportional to 15,639.35, 21,582.62 and 8,565.77

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Solution

The fourth proportional to 15,639.35, 21,582.62 and 8,565.77 is: 11,820.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.35 : 21,582.62 = 8,565.77 : x
  2. Step 2: Convert to fraction form
    15,639.35/21,582.62 = 8,565.77/x
  3. Step 3: Cross multiply
    15,639.35x = 21,582.62 × 8,565.77
  4. Step 4: Simplify right side
    15,639.35x = 184,871,758.92
  5. Step 5: Solve for x
    x = 184,871,758.92/15,639.35
  6. Step 6: Final answer
    x = 11,820.94

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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.