Home / 19,560.64-29,320.40-6,409.60

Finding the Fourth Proportional to 19,560.64, 29,320.40 and 6,409.60

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Solution

The fourth proportional to 19,560.64, 29,320.40 and 6,409.60 is: 9,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,560.64 : 29,320.40 = 6,409.60 : x
  2. Step 2: Convert to fraction form
    19,560.64/29,320.40 = 6,409.60/x
  3. Step 3: Cross multiply
    19,560.64x = 29,320.40 × 6,409.60
  4. Step 4: Simplify right side
    19,560.64x = 187,932,035.84
  5. Step 5: Solve for x
    x = 187,932,035.84/19,560.64
  6. Step 6: Final answer
    x = 9,607.66

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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.