Home / 28,513.96-42,776.63-8,791.76

Finding the Fourth Proportional to 28,513.96, 42,776.63 and 8,791.76

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Solution

The fourth proportional to 28,513.96, 42,776.63 and 8,791.76 is: 13,189.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.96 : 42,776.63 = 8,791.76 : x
  2. Step 2: Convert to fraction form
    28,513.96/42,776.63 = 8,791.76/x
  3. Step 3: Cross multiply
    28,513.96x = 42,776.63 × 8,791.76
  4. Step 4: Simplify right side
    28,513.96x = 376,081,820.61
  5. Step 5: Solve for x
    x = 376,081,820.61/28,513.96
  6. Step 6: Final answer
    x = 13,189.40

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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.