Home / 13,776.48-20,664.72-7,929.36

Finding the Fourth Proportional to 13,776.48, 20,664.72 and 7,929.36

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Solution

The fourth proportional to 13,776.48, 20,664.72 and 7,929.36 is: 11,894.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.48 : 20,664.72 = 7,929.36 : x
  2. Step 2: Convert to fraction form
    13,776.48/20,664.72 = 7,929.36/x
  3. Step 3: Cross multiply
    13,776.48x = 20,664.72 × 7,929.36
  4. Step 4: Simplify right side
    13,776.48x = 163,858,004.18
  5. Step 5: Solve for x
    x = 163,858,004.18/13,776.48
  6. Step 6: Final answer
    x = 11,894.04

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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.