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Finding the Fourth Proportional to 38,602.62, 53,269.14 and 21,603.99

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Solution

The fourth proportional to 38,602.62, 53,269.14 and 21,603.99 is: 29,812.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,602.62 : 53,269.14 = 21,603.99 : x
  2. Step 2: Convert to fraction form
    38,602.62/53,269.14 = 21,603.99/x
  3. Step 3: Cross multiply
    38,602.62x = 53,269.14 × 21,603.99
  4. Step 4: Simplify right side
    38,602.62x = 1,150,825,967.87
  5. Step 5: Solve for x
    x = 1,150,825,967.87/38,602.62
  6. Step 6: Final answer
    x = 29,812.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.