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Finding the Fourth Proportional to 38,564.70, 53,218.26 and 21,797.70

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Solution

The fourth proportional to 38,564.70, 53,218.26 and 21,797.70 is: 30,080.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,564.70 : 53,218.26 = 21,797.70 : x
  2. Step 2: Convert to fraction form
    38,564.70/53,218.26 = 21,797.70/x
  3. Step 3: Cross multiply
    38,564.70x = 53,218.26 × 21,797.70
  4. Step 4: Simplify right side
    38,564.70x = 1,160,035,666.00
  5. Step 5: Solve for x
    x = 1,160,035,666.00/38,564.70
  6. Step 6: Final answer
    x = 30,080.25

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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.