Home / 28,914.16-39,885.60-19,966.36

Finding the Fourth Proportional to 28,914.16, 39,885.60 and 19,966.36

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Solution

The fourth proportional to 28,914.16, 39,885.60 and 19,966.36 is: 27,542.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.16 : 39,885.60 = 19,966.36 : x
  2. Step 2: Convert to fraction form
    28,914.16/39,885.60 = 19,966.36/x
  3. Step 3: Cross multiply
    28,914.16x = 39,885.60 × 19,966.36
  4. Step 4: Simplify right side
    28,914.16x = 796,370,248.42
  5. Step 5: Solve for x
    x = 796,370,248.42/28,914.16
  6. Step 6: Final answer
    x = 27,542.57

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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.