Home / 28,157.63-42,220.04-12,362.02

Finding the Fourth Proportional to 28,157.63, 42,220.04 and 12,362.02

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Solution

The fourth proportional to 28,157.63, 42,220.04 and 12,362.02 is: 18,535.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.63 : 42,220.04 = 12,362.02 : x
  2. Step 2: Convert to fraction form
    28,157.63/42,220.04 = 12,362.02/x
  3. Step 3: Cross multiply
    28,157.63x = 42,220.04 × 12,362.02
  4. Step 4: Simplify right side
    28,157.63x = 521,924,811.52
  5. Step 5: Solve for x
    x = 521,924,811.52/28,157.63
  6. Step 6: Final answer
    x = 18,535.83

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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.