Home / 28,862.63-43,307.64-19,991.60

Finding the Fourth Proportional to 28,862.63, 43,307.64 and 19,991.60

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Solution

The fourth proportional to 28,862.63, 43,307.64 and 19,991.60 is: 29,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.63 : 43,307.64 = 19,991.60 : x
  2. Step 2: Convert to fraction form
    28,862.63/43,307.64 = 19,991.60/x
  3. Step 3: Cross multiply
    28,862.63x = 43,307.64 × 19,991.60
  4. Step 4: Simplify right side
    28,862.63x = 865,789,015.82
  5. Step 5: Solve for x
    x = 865,789,015.82/28,862.63
  6. Step 6: Final answer
    x = 29,996.89

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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.