Home / 39,403.08-54,325.72-28,639.10

Finding the Fourth Proportional to 39,403.08, 54,325.72 and 28,639.10

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Solution

The fourth proportional to 39,403.08, 54,325.72 and 28,639.10 is: 39,485.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,403.08 : 54,325.72 = 28,639.10 : x
  2. Step 2: Convert to fraction form
    39,403.08/54,325.72 = 28,639.10/x
  3. Step 3: Cross multiply
    39,403.08x = 54,325.72 × 28,639.10
  4. Step 4: Simplify right side
    39,403.08x = 1,555,839,727.65
  5. Step 5: Solve for x
    x = 1,555,839,727.65/39,403.08
  6. Step 6: Final answer
    x = 39,485.23

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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.