Home / 28,520.56-39,359.64-15,945.32

Finding the Fourth Proportional to 28,520.56, 39,359.64 and 15,945.32

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Solution

The fourth proportional to 28,520.56, 39,359.64 and 15,945.32 is: 22,005.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.56 : 39,359.64 = 15,945.32 : x
  2. Step 2: Convert to fraction form
    28,520.56/39,359.64 = 15,945.32/x
  3. Step 3: Cross multiply
    28,520.56x = 39,359.64 × 15,945.32
  4. Step 4: Simplify right side
    28,520.56x = 627,602,054.88
  5. Step 5: Solve for x
    x = 627,602,054.88/28,520.56
  6. Step 6: Final answer
    x = 22,005.25

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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.