Home / 28,565.84-39,420.60-15,992.96

Finding the Fourth Proportional to 28,565.84, 39,420.60 and 15,992.96

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Solution

The fourth proportional to 28,565.84, 39,420.60 and 15,992.96 is: 22,070.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.84 : 39,420.60 = 15,992.96 : x
  2. Step 2: Convert to fraction form
    28,565.84/39,420.60 = 15,992.96/x
  3. Step 3: Cross multiply
    28,565.84x = 39,420.60 × 15,992.96
  4. Step 4: Simplify right side
    28,565.84x = 630,452,078.98
  5. Step 5: Solve for x
    x = 630,452,078.98/28,565.84
  6. Step 6: Final answer
    x = 22,070.14

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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.