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Finding the Fourth Proportional to 28,597.52, 42,837.24 and 21,210.32

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Solution

The fourth proportional to 28,597.52, 42,837.24 and 21,210.32 is: 31,771.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,597.52 : 42,837.24 = 21,210.32 : x
  2. Step 2: Convert to fraction form
    28,597.52/42,837.24 = 21,210.32/x
  3. Step 3: Cross multiply
    28,597.52x = 42,837.24 × 21,210.32
  4. Step 4: Simplify right side
    28,597.52x = 908,591,568.32
  5. Step 5: Solve for x
    x = 908,591,568.32/28,597.52
  6. Step 6: Final answer
    x = 31,771.69

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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.