Home / 13,527.22-18,680.32-12,790.92

Finding the Fourth Proportional to 13,527.22, 18,680.32 and 12,790.92

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Solution

The fourth proportional to 13,527.22, 18,680.32 and 12,790.92 is: 17,663.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,527.22 : 18,680.32 = 12,790.92 : x
  2. Step 2: Convert to fraction form
    13,527.22/18,680.32 = 12,790.92/x
  3. Step 3: Cross multiply
    13,527.22x = 18,680.32 × 12,790.92
  4. Step 4: Simplify right side
    13,527.22x = 238,938,478.69
  5. Step 5: Solve for x
    x = 238,938,478.69/13,527.22
  6. Step 6: Final answer
    x = 17,663.53

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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.