Home / 28,636.58-42,937.61-12,838.75

Finding the Fourth Proportional to 28,636.58, 42,937.61 and 12,838.75

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Solution

The fourth proportional to 28,636.58, 42,937.61 and 12,838.75 is: 19,250.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.58 : 42,937.61 = 12,838.75 : x
  2. Step 2: Convert to fraction form
    28,636.58/42,937.61 = 12,838.75/x
  3. Step 3: Cross multiply
    28,636.58x = 42,937.61 × 12,838.75
  4. Step 4: Simplify right side
    28,636.58x = 551,265,068.85
  5. Step 5: Solve for x
    x = 551,265,068.85/28,636.58
  6. Step 6: Final answer
    x = 19,250.38

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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.