Home / 28,558.83-39,429.05-18,354

Finding the Fourth Proportional to 28,558.83, 39,429.05 and 18,354

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Solution

The fourth proportional to 28,558.83, 39,429.05 and 18,354 is: 25,340.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.83 : 39,429.05 = 18,354 : x
  2. Step 2: Convert to fraction form
    28,558.83/39,429.05 = 18,354/x
  3. Step 3: Cross multiply
    28,558.83x = 39,429.05 × 18,354
  4. Step 4: Simplify right side
    28,558.83x = 723,680,783.70
  5. Step 5: Solve for x
    x = 723,680,783.70/28,558.83
  6. Step 6: Final answer
    x = 25,340.00

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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.