Home / 28,364.77-42,569.84-12,783.61

Finding the Fourth Proportional to 28,364.77, 42,569.84 and 12,783.61

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Solution

The fourth proportional to 28,364.77, 42,569.84 and 12,783.61 is: 19,185.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.77 : 42,569.84 = 12,783.61 : x
  2. Step 2: Convert to fraction form
    28,364.77/42,569.84 = 12,783.61/x
  3. Step 3: Cross multiply
    28,364.77x = 42,569.84 × 12,783.61
  4. Step 4: Simplify right side
    28,364.77x = 544,196,168.40
  5. Step 5: Solve for x
    x = 544,196,168.40/28,364.77
  6. Step 6: Final answer
    x = 19,185.64

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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.