Home / 28,487.04-42,734.66-9,771.79

Finding the Fourth Proportional to 28,487.04, 42,734.66 and 9,771.79

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Solution

The fourth proportional to 28,487.04, 42,734.66 and 9,771.79 is: 14,659.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.04 : 42,734.66 = 9,771.79 : x
  2. Step 2: Convert to fraction form
    28,487.04/42,734.66 = 9,771.79/x
  3. Step 3: Cross multiply
    28,487.04x = 42,734.66 × 9,771.79
  4. Step 4: Simplify right side
    28,487.04x = 417,594,130.12
  5. Step 5: Solve for x
    x = 417,594,130.12/28,487.04
  6. Step 6: Final answer
    x = 14,659.09

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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.