Home / 27,957.40-38,541.62-19,985.78

Finding the Fourth Proportional to 27,957.40, 38,541.62 and 19,985.78

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Solution

The fourth proportional to 27,957.40, 38,541.62 and 19,985.78 is: 27,552.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,957.40 : 38,541.62 = 19,985.78 : x
  2. Step 2: Convert to fraction form
    27,957.40/38,541.62 = 19,985.78/x
  3. Step 3: Cross multiply
    27,957.40x = 38,541.62 × 19,985.78
  4. Step 4: Simplify right side
    27,957.40x = 770,284,338.16
  5. Step 5: Solve for x
    x = 770,284,338.16/27,957.40
  6. Step 6: Final answer
    x = 27,552.07

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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.