Home / 13,742.64-20,595.60-7,155

Finding the Fourth Proportional to 13,742.64, 20,595.60 and 7,155

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Solution

The fourth proportional to 13,742.64, 20,595.60 and 7,155 is: 10,722.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.64 : 20,595.60 = 7,155 : x
  2. Step 2: Convert to fraction form
    13,742.64/20,595.60 = 7,155/x
  3. Step 3: Cross multiply
    13,742.64x = 20,595.60 × 7,155
  4. Step 4: Simplify right side
    13,742.64x = 147,361,518
  5. Step 5: Solve for x
    x = 147,361,518/13,742.64
  6. Step 6: Final answer
    x = 10,722.94

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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.