Home / 28,530.07-39,358.21-18,461.75

Finding the Fourth Proportional to 28,530.07, 39,358.21 and 18,461.75

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Solution

The fourth proportional to 28,530.07, 39,358.21 and 18,461.75 is: 25,468.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.07 : 39,358.21 = 18,461.75 : x
  2. Step 2: Convert to fraction form
    28,530.07/39,358.21 = 18,461.75/x
  3. Step 3: Cross multiply
    28,530.07x = 39,358.21 × 18,461.75
  4. Step 4: Simplify right side
    28,530.07x = 726,621,433.47
  5. Step 5: Solve for x
    x = 726,621,433.47/28,530.07
  6. Step 6: Final answer
    x = 25,468.62

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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.