Home / 28,579.51-39,426.62-18,511.19

Finding the Fourth Proportional to 28,579.51, 39,426.62 and 18,511.19

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Solution

The fourth proportional to 28,579.51, 39,426.62 and 18,511.19 is: 25,536.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.51 : 39,426.62 = 18,511.19 : x
  2. Step 2: Convert to fraction form
    28,579.51/39,426.62 = 18,511.19/x
  3. Step 3: Cross multiply
    28,579.51x = 39,426.62 × 18,511.19
  4. Step 4: Simplify right side
    28,579.51x = 729,833,532.17
  5. Step 5: Solve for x
    x = 729,833,532.17/28,579.51
  6. Step 6: Final answer
    x = 25,536.95

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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.