Home / 38,699.75-53,406.27-21,707.78

Finding the Fourth Proportional to 38,699.75, 53,406.27 and 21,707.78

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Solution

The fourth proportional to 38,699.75, 53,406.27 and 21,707.78 is: 29,957.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,699.75 : 53,406.27 = 21,707.78 : x
  2. Step 2: Convert to fraction form
    38,699.75/53,406.27 = 21,707.78/x
  3. Step 3: Cross multiply
    38,699.75x = 53,406.27 × 21,707.78
  4. Step 4: Simplify right side
    38,699.75x = 1,159,331,292.75
  5. Step 5: Solve for x
    x = 1,159,331,292.75/38,699.75
  6. Step 6: Final answer
    x = 29,957.07

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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.