Home / 28,383.56-39,170.53-15,808.31

Finding the Fourth Proportional to 28,383.56, 39,170.53 and 15,808.31

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Solution

The fourth proportional to 28,383.56, 39,170.53 and 15,808.31 is: 21,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.56 : 39,170.53 = 15,808.31 : x
  2. Step 2: Convert to fraction form
    28,383.56/39,170.53 = 15,808.31/x
  3. Step 3: Cross multiply
    28,383.56x = 39,170.53 × 15,808.31
  4. Step 4: Simplify right side
    28,383.56x = 619,219,881.10
  5. Step 5: Solve for x
    x = 619,219,881.10/28,383.56
  6. Step 6: Final answer
    x = 21,816.15

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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.