Home / 28,498.86-42,724.80-21,465.36

Finding the Fourth Proportional to 28,498.86, 42,724.80 and 21,465.36

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Solution

The fourth proportional to 28,498.86, 42,724.80 and 21,465.36 is: 32,180.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.86 : 42,724.80 = 21,465.36 : x
  2. Step 2: Convert to fraction form
    28,498.86/42,724.80 = 21,465.36/x
  3. Step 3: Cross multiply
    28,498.86x = 42,724.80 × 21,465.36
  4. Step 4: Simplify right side
    28,498.86x = 917,103,212.93
  5. Step 5: Solve for x
    x = 917,103,212.93/28,498.86
  6. Step 6: Final answer
    x = 32,180.35

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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.