Home / 28,374.16-42,587.16-21,778.96

Finding the Fourth Proportional to 28,374.16, 42,587.16 and 21,778.96

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Solution

The fourth proportional to 28,374.16, 42,587.16 and 21,778.96 is: 32,688.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,374.16 : 42,587.16 = 21,778.96 : x
  2. Step 2: Convert to fraction form
    28,374.16/42,587.16 = 21,778.96/x
  3. Step 3: Cross multiply
    28,374.16x = 42,587.16 × 21,778.96
  4. Step 4: Simplify right side
    28,374.16x = 927,504,054.15
  5. Step 5: Solve for x
    x = 927,504,054.15/28,374.16
  6. Step 6: Final answer
    x = 32,688.34

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1.5x scale

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.