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Finding the Fourth Proportional to 28,969.60, 43,389.60 and 23,785.60

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Solution

The fourth proportional to 28,969.60, 43,389.60 and 23,785.60 is: 35,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.60 : 43,389.60 = 23,785.60 : x
  2. Step 2: Convert to fraction form
    28,969.60/43,389.60 = 23,785.60/x
  3. Step 3: Cross multiply
    28,969.60x = 43,389.60 × 23,785.60
  4. Step 4: Simplify right side
    28,969.60x = 1,032,047,669.76
  5. Step 5: Solve for x
    x = 1,032,047,669.76/28,969.60
  6. Step 6: Final answer
    x = 35,625.20

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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.