Home / 13,527.05-18,680.10-12,790.76

Finding the Fourth Proportional to 13,527.05, 18,680.10 and 12,790.76

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Solution

The fourth proportional to 13,527.05, 18,680.10 and 12,790.76 is: 17,663.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,527.05 : 18,680.10 = 12,790.76 : x
  2. Step 2: Convert to fraction form
    13,527.05/18,680.10 = 12,790.76/x
  3. Step 3: Cross multiply
    13,527.05x = 18,680.10 × 12,790.76
  4. Step 4: Simplify right side
    13,527.05x = 238,932,675.88
  5. Step 5: Solve for x
    x = 238,932,675.88/13,527.05
  6. Step 6: Final answer
    x = 17,663.32

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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.