Home / 28,146.42-38,840.31-15,571.17

Finding the Fourth Proportional to 28,146.42, 38,840.31 and 15,571.17

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Solution

The fourth proportional to 28,146.42, 38,840.31 and 15,571.17 is: 21,487.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.42 : 38,840.31 = 15,571.17 : x
  2. Step 2: Convert to fraction form
    28,146.42/38,840.31 = 15,571.17/x
  3. Step 3: Cross multiply
    28,146.42x = 38,840.31 × 15,571.17
  4. Step 4: Simplify right side
    28,146.42x = 604,789,069.86
  5. Step 5: Solve for x
    x = 604,789,069.86/28,146.42
  6. Step 6: Final answer
    x = 21,487.25

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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.