Home / 39,426.57-54,406.64-21,518.15

Finding the Fourth Proportional to 39,426.57, 54,406.64 and 21,518.15

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Solution

The fourth proportional to 39,426.57, 54,406.64 and 21,518.15 is: 29,693.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,426.57 : 54,406.64 = 21,518.15 : x
  2. Step 2: Convert to fraction form
    39,426.57/54,406.64 = 21,518.15/x
  3. Step 3: Cross multiply
    39,426.57x = 54,406.64 × 21,518.15
  4. Step 4: Simplify right side
    39,426.57x = 1,170,729,860.89
  5. Step 5: Solve for x
    x = 1,170,729,860.89/39,426.57
  6. Step 6: Final answer
    x = 29,693.93

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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.