Home / 28,005.13-42,006.60-6,945.22

Finding the Fourth Proportional to 28,005.13, 42,006.60 and 6,945.22

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Solution

The fourth proportional to 28,005.13, 42,006.60 and 6,945.22 is: 10,417.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.13 : 42,006.60 = 6,945.22 : x
  2. Step 2: Convert to fraction form
    28,005.13/42,006.60 = 6,945.22/x
  3. Step 3: Cross multiply
    28,005.13x = 42,006.60 × 6,945.22
  4. Step 4: Simplify right side
    28,005.13x = 291,745,078.45
  5. Step 5: Solve for x
    x = 291,745,078.45/28,005.13
  6. Step 6: Final answer
    x = 10,417.56

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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.