Home / 27,639.51-38,153.88-18,699.14

Finding the Fourth Proportional to 27,639.51, 38,153.88 and 18,699.14

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Solution

The fourth proportional to 27,639.51, 38,153.88 and 18,699.14 is: 25,812.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,639.51 : 38,153.88 = 18,699.14 : x
  2. Step 2: Convert to fraction form
    27,639.51/38,153.88 = 18,699.14/x
  3. Step 3: Cross multiply
    27,639.51x = 38,153.88 × 18,699.14
  4. Step 4: Simplify right side
    27,639.51x = 713,444,552.89
  5. Step 5: Solve for x
    x = 713,444,552.89/27,639.51
  6. Step 6: Final answer
    x = 25,812.49

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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.