Home / 28,854.51-39,812.36-19,899.15

Finding the Fourth Proportional to 28,854.51, 39,812.36 and 19,899.15

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Solution

The fourth proportional to 28,854.51, 39,812.36 and 19,899.15 is: 27,456.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,854.51 : 39,812.36 = 19,899.15 : x
  2. Step 2: Convert to fraction form
    28,854.51/39,812.36 = 19,899.15/x
  3. Step 3: Cross multiply
    28,854.51x = 39,812.36 × 19,899.15
  4. Step 4: Simplify right side
    28,854.51x = 792,232,024.00
  5. Step 5: Solve for x
    x = 792,232,024.00/28,854.51
  6. Step 6: Final answer
    x = 27,456.09

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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.