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Finding the Fourth Proportional to 28,319.70, 42,483.60 and 9,600.60

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Solution

The fourth proportional to 28,319.70, 42,483.60 and 9,600.60 is: 14,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.70 : 42,483.60 = 9,600.60 : x
  2. Step 2: Convert to fraction form
    28,319.70/42,483.60 = 9,600.60/x
  3. Step 3: Cross multiply
    28,319.70x = 42,483.60 × 9,600.60
  4. Step 4: Simplify right side
    28,319.70x = 407,868,050.16
  5. Step 5: Solve for x
    x = 407,868,050.16/28,319.70
  6. Step 6: Final answer
    x = 14,402.27

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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.