Home / 28,953.09-43,418.70-12,320.96

Finding the Fourth Proportional to 28,953.09, 43,418.70 and 12,320.96

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Solution

The fourth proportional to 28,953.09, 43,418.70 and 12,320.96 is: 18,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,953.09 : 43,418.70 = 12,320.96 : x
  2. Step 2: Convert to fraction form
    28,953.09/43,418.70 = 12,320.96/x
  3. Step 3: Cross multiply
    28,953.09x = 43,418.70 × 12,320.96
  4. Step 4: Simplify right side
    28,953.09x = 534,959,848.86
  5. Step 5: Solve for x
    x = 534,959,848.86/28,953.09
  6. Step 6: Final answer
    x = 18,476.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.