Home / 38,817.23-53,561.77-21,818.32

Finding the Fourth Proportional to 38,817.23, 53,561.77 and 21,818.32

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Solution

The fourth proportional to 38,817.23, 53,561.77 and 21,818.32 is: 30,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,817.23 : 53,561.77 = 21,818.32 : x
  2. Step 2: Convert to fraction form
    38,817.23/53,561.77 = 21,818.32/x
  3. Step 3: Cross multiply
    38,817.23x = 53,561.77 × 21,818.32
  4. Step 4: Simplify right side
    38,817.23x = 1,168,627,649.18
  5. Step 5: Solve for x
    x = 1,168,627,649.18/38,817.23
  6. Step 6: Final answer
    x = 30,105.90

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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.