Home / 28,106.16-42,160.65-9,385.44

Finding the Fourth Proportional to 28,106.16, 42,160.65 and 9,385.44

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Solution

The fourth proportional to 28,106.16, 42,160.65 and 9,385.44 is: 14,078.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.16 : 42,160.65 = 9,385.44 : x
  2. Step 2: Convert to fraction form
    28,106.16/42,160.65 = 9,385.44/x
  3. Step 3: Cross multiply
    28,106.16x = 42,160.65 × 9,385.44
  4. Step 4: Simplify right side
    28,106.16x = 395,696,250.94
  5. Step 5: Solve for x
    x = 395,696,250.94/28,106.16
  6. Step 6: Final answer
    x = 14,078.63

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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.