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Finding the Fourth Proportional to 28,533.89, 42,802.90 and 8,809.90

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Solution

The fourth proportional to 28,533.89, 42,802.90 and 8,809.90 is: 13,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.89 : 42,802.90 = 8,809.90 : x
  2. Step 2: Convert to fraction form
    28,533.89/42,802.90 = 8,809.90/x
  3. Step 3: Cross multiply
    28,533.89x = 42,802.90 × 8,809.90
  4. Step 4: Simplify right side
    28,533.89x = 377,089,139.68
  5. Step 5: Solve for x
    x = 377,089,139.68/28,533.89
  6. Step 6: Final answer
    x = 13,215.48

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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.