Home / 13,109.60-19,664.88-4,345.28

Finding the Fourth Proportional to 13,109.60, 19,664.88 and 4,345.28

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Solution

The fourth proportional to 13,109.60, 19,664.88 and 4,345.28 is: 6,518.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.60 : 19,664.88 = 4,345.28 : x
  2. Step 2: Convert to fraction form
    13,109.60/19,664.88 = 4,345.28/x
  3. Step 3: Cross multiply
    13,109.60x = 19,664.88 × 4,345.28
  4. Step 4: Simplify right side
    13,109.60x = 85,449,409.77
  5. Step 5: Solve for x
    x = 85,449,409.77/13,109.60
  6. Step 6: Final answer
    x = 6,518.08

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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.