Home / 30,417.21-42,004.59-28,760.52

Finding the Fourth Proportional to 30,417.21, 42,004.59 and 28,760.52

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Solution

The fourth proportional to 30,417.21, 42,004.59 and 28,760.52 is: 39,716.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,417.21 : 42,004.59 = 28,760.52 : x
  2. Step 2: Convert to fraction form
    30,417.21/42,004.59 = 28,760.52/x
  3. Step 3: Cross multiply
    30,417.21x = 42,004.59 × 28,760.52
  4. Step 4: Simplify right side
    30,417.21x = 1,208,073,850.79
  5. Step 5: Solve for x
    x = 1,208,073,850.79/30,417.21
  6. Step 6: Final answer
    x = 39,716.79

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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.