Home / 39,050.80-53,890.02-21,145.75

Finding the Fourth Proportional to 39,050.80, 53,890.02 and 21,145.75

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Solution

The fourth proportional to 39,050.80, 53,890.02 and 21,145.75 is: 29,181.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,050.80 : 53,890.02 = 21,145.75 : x
  2. Step 2: Convert to fraction form
    39,050.80/53,890.02 = 21,145.75/x
  3. Step 3: Cross multiply
    39,050.80x = 53,890.02 × 21,145.75
  4. Step 4: Simplify right side
    39,050.80x = 1,139,544,890.42
  5. Step 5: Solve for x
    x = 1,139,544,890.42/39,050.80
  6. Step 6: Final answer
    x = 29,181.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.