Home / 28,390.80-42,554.52-12,599.04

Finding the Fourth Proportional to 28,390.80, 42,554.52 and 12,599.04

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Solution

The fourth proportional to 28,390.80, 42,554.52 and 12,599.04 is: 18,884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,390.80 : 42,554.52 = 12,599.04 : x
  2. Step 2: Convert to fraction form
    28,390.80/42,554.52 = 12,599.04/x
  3. Step 3: Cross multiply
    28,390.80x = 42,554.52 × 12,599.04
  4. Step 4: Simplify right side
    28,390.80x = 536,146,099.66
  5. Step 5: Solve for x
    x = 536,146,099.66/28,390.80
  6. Step 6: Final answer
    x = 18,884.50

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1.5x scale

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.