Home / 28,599.12-42,913.36-13,623.20

Finding the Fourth Proportional to 28,599.12, 42,913.36 and 13,623.20

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Solution

The fourth proportional to 28,599.12, 42,913.36 and 13,623.20 is: 20,441.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,599.12 : 42,913.36 = 13,623.20 : x
  2. Step 2: Convert to fraction form
    28,599.12/42,913.36 = 13,623.20/x
  3. Step 3: Cross multiply
    28,599.12x = 42,913.36 × 13,623.20
  4. Step 4: Simplify right side
    28,599.12x = 584,617,285.95
  5. Step 5: Solve for x
    x = 584,617,285.95/28,599.12
  6. Step 6: Final answer
    x = 20,441.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.