Home / 28,278.73-42,411.08-9,558.35

Finding the Fourth Proportional to 28,278.73, 42,411.08 and 9,558.35

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Solution

The fourth proportional to 28,278.73, 42,411.08 and 9,558.35 is: 14,335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.73 : 42,411.08 = 9,558.35 : x
  2. Step 2: Convert to fraction form
    28,278.73/42,411.08 = 9,558.35/x
  3. Step 3: Cross multiply
    28,278.73x = 42,411.08 × 9,558.35
  4. Step 4: Simplify right side
    28,278.73x = 405,379,917.40
  5. Step 5: Solve for x
    x = 405,379,917.40/28,278.73
  6. Step 6: Final answer
    x = 14,335.15

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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.