Home / 28,604.79-39,474.81-15,858.36

Finding the Fourth Proportional to 28,604.79, 39,474.81 and 15,858.36

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Solution

The fourth proportional to 28,604.79, 39,474.81 and 15,858.36 is: 21,884.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,604.79 : 39,474.81 = 15,858.36 : x
  2. Step 2: Convert to fraction form
    28,604.79/39,474.81 = 15,858.36/x
  3. Step 3: Cross multiply
    28,604.79x = 39,474.81 × 15,858.36
  4. Step 4: Simplify right side
    28,604.79x = 626,005,747.91
  5. Step 5: Solve for x
    x = 626,005,747.91/28,604.79
  6. Step 6: Final answer
    x = 21,884.65

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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.