Home / 39,709.15-54,798.46-21,804.30

Finding the Fourth Proportional to 39,709.15, 54,798.46 and 21,804.30

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Solution

The fourth proportional to 39,709.15, 54,798.46 and 21,804.30 is: 30,089.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,709.15 : 54,798.46 = 21,804.30 : x
  2. Step 2: Convert to fraction form
    39,709.15/54,798.46 = 21,804.30/x
  3. Step 3: Cross multiply
    39,709.15x = 54,798.46 × 21,804.30
  4. Step 4: Simplify right side
    39,709.15x = 1,194,842,006.87
  5. Step 5: Solve for x
    x = 1,194,842,006.87/39,709.15
  6. Step 6: Final answer
    x = 30,089.84

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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.