Home / 29,728.91-41,030.40-18,978.39

Finding the Fourth Proportional to 29,728.91, 41,030.40 and 18,978.39

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Solution

The fourth proportional to 29,728.91, 41,030.40 and 18,978.39 is: 26,193.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,728.91 : 41,030.40 = 18,978.39 : x
  2. Step 2: Convert to fraction form
    29,728.91/41,030.40 = 18,978.39/x
  3. Step 3: Cross multiply
    29,728.91x = 41,030.40 × 18,978.39
  4. Step 4: Simplify right side
    29,728.91x = 778,690,933.06
  5. Step 5: Solve for x
    x = 778,690,933.06/29,728.91
  6. Step 6: Final answer
    x = 26,193.06

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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.