Home / 21,998.58-30,356.37-12,565.86

Finding the Fourth Proportional to 21,998.58, 30,356.37 and 12,565.86

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Solution

The fourth proportional to 21,998.58, 30,356.37 and 12,565.86 is: 17,339.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.58 : 30,356.37 = 12,565.86 : x
  2. Step 2: Convert to fraction form
    21,998.58/30,356.37 = 12,565.86/x
  3. Step 3: Cross multiply
    21,998.58x = 30,356.37 × 12,565.86
  4. Step 4: Simplify right side
    21,998.58x = 381,453,895.53
  5. Step 5: Solve for x
    x = 381,453,895.53/21,998.58
  6. Step 6: Final answer
    x = 17,339.93

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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.