Home / 21,901.86-30,224.54-11,830.32

Finding the Fourth Proportional to 21,901.86, 30,224.54 and 11,830.32

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Solution

The fourth proportional to 21,901.86, 30,224.54 and 11,830.32 is: 16,325.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,901.86 : 30,224.54 = 11,830.32 : x
  2. Step 2: Convert to fraction form
    21,901.86/30,224.54 = 11,830.32/x
  3. Step 3: Cross multiply
    21,901.86x = 30,224.54 × 11,830.32
  4. Step 4: Simplify right side
    21,901.86x = 357,565,980.05
  5. Step 5: Solve for x
    x = 357,565,980.05/21,901.86
  6. Step 6: Final answer
    x = 16,325.83

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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.