Home / 21,565.01-29,767.75-12,615.32

Finding the Fourth Proportional to 21,565.01, 29,767.75 and 12,615.32

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Solution

The fourth proportional to 21,565.01, 29,767.75 and 12,615.32 is: 17,413.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.01 : 29,767.75 = 12,615.32 : x
  2. Step 2: Convert to fraction form
    21,565.01/29,767.75 = 12,615.32/x
  3. Step 3: Cross multiply
    21,565.01x = 29,767.75 × 12,615.32
  4. Step 4: Simplify right side
    21,565.01x = 375,529,734.81
  5. Step 5: Solve for x
    x = 375,529,734.81/21,565.01
  6. Step 6: Final answer
    x = 17,413.84

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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.