Home / 28,972.10-43,447.35-11,438.30

Finding the Fourth Proportional to 28,972.10, 43,447.35 and 11,438.30

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Solution

The fourth proportional to 28,972.10, 43,447.35 and 11,438.30 is: 17,153.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,972.10 : 43,447.35 = 11,438.30 : x
  2. Step 2: Convert to fraction form
    28,972.10/43,447.35 = 11,438.30/x
  3. Step 3: Cross multiply
    28,972.10x = 43,447.35 × 11,438.30
  4. Step 4: Simplify right side
    28,972.10x = 496,963,823.51
  5. Step 5: Solve for x
    x = 496,963,823.51/28,972.10
  6. Step 6: Final answer
    x = 17,153.19

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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.