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Finding the Fourth Proportional to 28,783.78, 43,179.93 and 9,055.78

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Solution

The fourth proportional to 28,783.78, 43,179.93 and 9,055.78 is: 13,585.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,783.78 : 43,179.93 = 9,055.78 : x
  2. Step 2: Convert to fraction form
    28,783.78/43,179.93 = 9,055.78/x
  3. Step 3: Cross multiply
    28,783.78x = 43,179.93 × 9,055.78
  4. Step 4: Simplify right side
    28,783.78x = 391,027,946.50
  5. Step 5: Solve for x
    x = 391,027,946.50/28,783.78
  6. Step 6: Final answer
    x = 13,585.01

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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.