Home / 28,989.96-43,474.68-13,790.72

Finding the Fourth Proportional to 28,989.96, 43,474.68 and 13,790.72

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Solution

The fourth proportional to 28,989.96, 43,474.68 and 13,790.72 is: 20,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.96 : 43,474.68 = 13,790.72 : x
  2. Step 2: Convert to fraction form
    28,989.96/43,474.68 = 13,790.72/x
  3. Step 3: Cross multiply
    28,989.96x = 43,474.68 × 13,790.72
  4. Step 4: Simplify right side
    28,989.96x = 599,547,138.97
  5. Step 5: Solve for x
    x = 599,547,138.97/28,989.96
  6. Step 6: Final answer
    x = 20,681.20

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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.