Home / 28,005.08-42,007.20-11,365.04

Finding the Fourth Proportional to 28,005.08, 42,007.20 and 11,365.04

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Solution

The fourth proportional to 28,005.08, 42,007.20 and 11,365.04 is: 17,047.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.08 : 42,007.20 = 11,365.04 : x
  2. Step 2: Convert to fraction form
    28,005.08/42,007.20 = 11,365.04/x
  3. Step 3: Cross multiply
    28,005.08x = 42,007.20 × 11,365.04
  4. Step 4: Simplify right side
    28,005.08x = 477,413,508.29
  5. Step 5: Solve for x
    x = 477,413,508.29/28,005.08
  6. Step 6: Final answer
    x = 17,047.39

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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.