Home / 30,728.91-46,111.28-12,958.47

Finding the Fourth Proportional to 30,728.91, 46,111.28 and 12,958.47

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Solution

The fourth proportional to 30,728.91, 46,111.28 and 12,958.47 is: 19,445.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728.91 : 46,111.28 = 12,958.47 : x
  2. Step 2: Convert to fraction form
    30,728.91/46,111.28 = 12,958.47/x
  3. Step 3: Cross multiply
    30,728.91x = 46,111.28 × 12,958.47
  4. Step 4: Simplify right side
    30,728.91x = 597,531,646.64
  5. Step 5: Solve for x
    x = 597,531,646.64/30,728.91
  6. Step 6: Final answer
    x = 19,445.26

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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.