Home / 13,911.60-20,870.64-4,551.58

Finding the Fourth Proportional to 13,911.60, 20,870.64 and 4,551.58

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Solution

The fourth proportional to 13,911.60, 20,870.64 and 4,551.58 is: 6,828.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.60 : 20,870.64 = 4,551.58 : x
  2. Step 2: Convert to fraction form
    13,911.60/20,870.64 = 4,551.58/x
  3. Step 3: Cross multiply
    13,911.60x = 20,870.64 × 4,551.58
  4. Step 4: Simplify right side
    13,911.60x = 94,994,400.35
  5. Step 5: Solve for x
    x = 94,994,400.35/13,911.60
  6. Step 6: Final answer
    x = 6,828.43

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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.