Home / 25,728.12-35,509.32-14,971.86

Finding the Fourth Proportional to 25,728.12, 35,509.32 and 14,971.86

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Solution

The fourth proportional to 25,728.12, 35,509.32 and 14,971.86 is: 20,663.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.12 : 35,509.32 = 14,971.86 : x
  2. Step 2: Convert to fraction form
    25,728.12/35,509.32 = 14,971.86/x
  3. Step 3: Cross multiply
    25,728.12x = 35,509.32 × 14,971.86
  4. Step 4: Simplify right side
    25,728.12x = 531,640,567.74
  5. Step 5: Solve for x
    x = 531,640,567.74/25,728.12
  6. Step 6: Final answer
    x = 20,663.79

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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.