Home / 19,784.16-29,655.73-12,371.60

Finding the Fourth Proportional to 19,784.16, 29,655.73 and 12,371.60

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Solution

The fourth proportional to 19,784.16, 29,655.73 and 12,371.60 is: 18,544.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,784.16 : 29,655.73 = 12,371.60 : x
  2. Step 2: Convert to fraction form
    19,784.16/29,655.73 = 12,371.60/x
  3. Step 3: Cross multiply
    19,784.16x = 29,655.73 × 12,371.60
  4. Step 4: Simplify right side
    19,784.16x = 366,888,829.27
  5. Step 5: Solve for x
    x = 366,888,829.27/19,784.16
  6. Step 6: Final answer
    x = 18,544.57

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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.