Home / 28,718.31-43,077.48-13,125

Finding the Fourth Proportional to 28,718.31, 43,077.48 and 13,125

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Solution

The fourth proportional to 28,718.31, 43,077.48 and 13,125 is: 19,687.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.31 : 43,077.48 = 13,125 : x
  2. Step 2: Convert to fraction form
    28,718.31/43,077.48 = 13,125/x
  3. Step 3: Cross multiply
    28,718.31x = 43,077.48 × 13,125
  4. Step 4: Simplify right side
    28,718.31x = 565,391,925
  5. Step 5: Solve for x
    x = 565,391,925/28,718.31
  6. Step 6: Final answer
    x = 19,687.51

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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.