Home / 28,363.36-39,142.37-15,617.86

Finding the Fourth Proportional to 28,363.36, 39,142.37 and 15,617.86

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Solution

The fourth proportional to 28,363.36, 39,142.37 and 15,617.86 is: 21,553.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.36 : 39,142.37 = 15,617.86 : x
  2. Step 2: Convert to fraction form
    28,363.36/39,142.37 = 15,617.86/x
  3. Step 3: Cross multiply
    28,363.36x = 39,142.37 × 15,617.86
  4. Step 4: Simplify right side
    28,363.36x = 611,319,878.78
  5. Step 5: Solve for x
    x = 611,319,878.78/28,363.36
  6. Step 6: Final answer
    x = 21,553.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.