Home / 13,709.32-20,548.38-8,518.76

Finding the Fourth Proportional to 13,709.32, 20,548.38 and 8,518.76

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Solution

The fourth proportional to 13,709.32, 20,548.38 and 8,518.76 is: 12,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.32 : 20,548.38 = 8,518.76 : x
  2. Step 2: Convert to fraction form
    13,709.32/20,548.38 = 8,518.76/x
  3. Step 3: Cross multiply
    13,709.32x = 20,548.38 × 8,518.76
  4. Step 4: Simplify right side
    13,709.32x = 175,046,717.61
  5. Step 5: Solve for x
    x = 175,046,717.61/13,709.32
  6. Step 6: Final answer
    x = 12,768.45

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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.