Home / 13,688.34-20,495.79-9,519.54

Finding the Fourth Proportional to 13,688.34, 20,495.79 and 9,519.54

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Solution

The fourth proportional to 13,688.34, 20,495.79 and 9,519.54 is: 14,253.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.34 : 20,495.79 = 9,519.54 : x
  2. Step 2: Convert to fraction form
    13,688.34/20,495.79 = 9,519.54/x
  3. Step 3: Cross multiply
    13,688.34x = 20,495.79 × 9,519.54
  4. Step 4: Simplify right side
    13,688.34x = 195,110,492.74
  5. Step 5: Solve for x
    x = 195,110,492.74/13,688.34
  6. Step 6: Final answer
    x = 14,253.77

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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.