Home / 19,780.02-29,669.94-7,939.08

Finding the Fourth Proportional to 19,780.02, 29,669.94 and 7,939.08

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Solution

The fourth proportional to 19,780.02, 29,669.94 and 7,939.08 is: 11,908.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.02 : 29,669.94 = 7,939.08 : x
  2. Step 2: Convert to fraction form
    19,780.02/29,669.94 = 7,939.08/x
  3. Step 3: Cross multiply
    19,780.02x = 29,669.94 × 7,939.08
  4. Step 4: Simplify right side
    19,780.02x = 235,552,027.26
  5. Step 5: Solve for x
    x = 235,552,027.26/19,780.02
  6. Step 6: Final answer
    x = 11,908.58

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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.