Home / 28,628.30-42,942.45-12,007.10

Finding the Fourth Proportional to 28,628.30, 42,942.45 and 12,007.10

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Solution

The fourth proportional to 28,628.30, 42,942.45 and 12,007.10 is: 18,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,628.30 : 42,942.45 = 12,007.10 : x
  2. Step 2: Convert to fraction form
    28,628.30/42,942.45 = 12,007.10/x
  3. Step 3: Cross multiply
    28,628.30x = 42,942.45 × 12,007.10
  4. Step 4: Simplify right side
    28,628.30x = 515,614,291.40
  5. Step 5: Solve for x
    x = 515,614,291.40/28,628.30
  6. Step 6: Final answer
    x = 18,010.65

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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.