Home / 35,947.40-53,953.10-21,137.80

Finding the Fourth Proportional to 35,947.40, 53,953.10 and 21,137.80

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Solution

The fourth proportional to 35,947.40, 53,953.10 and 21,137.80 is: 31,725.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,947.40 : 53,953.10 = 21,137.80 : x
  2. Step 2: Convert to fraction form
    35,947.40/53,953.10 = 21,137.80/x
  3. Step 3: Cross multiply
    35,947.40x = 53,953.10 × 21,137.80
  4. Step 4: Simplify right side
    35,947.40x = 1,140,449,837.18
  5. Step 5: Solve for x
    x = 1,140,449,837.18/35,947.40
  6. Step 6: Final answer
    x = 31,725.52

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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.