Home / 28,078.50-42,106.79-12,066.57

Finding the Fourth Proportional to 28,078.50, 42,106.79 and 12,066.57

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Solution

The fourth proportional to 28,078.50, 42,106.79 and 12,066.57 is: 18,095.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.50 : 42,106.79 = 12,066.57 : x
  2. Step 2: Convert to fraction form
    28,078.50/42,106.79 = 12,066.57/x
  3. Step 3: Cross multiply
    28,078.50x = 42,106.79 × 12,066.57
  4. Step 4: Simplify right side
    28,078.50x = 508,084,491.30
  5. Step 5: Solve for x
    x = 508,084,491.30/28,078.50
  6. Step 6: Final answer
    x = 18,095.14

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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.