Home / 28,646.60-39,529.10-15,900.32

Finding the Fourth Proportional to 28,646.60, 39,529.10 and 15,900.32

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Solution

The fourth proportional to 28,646.60, 39,529.10 and 15,900.32 is: 21,940.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.60 : 39,529.10 = 15,900.32 : x
  2. Step 2: Convert to fraction form
    28,646.60/39,529.10 = 15,900.32/x
  3. Step 3: Cross multiply
    28,646.60x = 39,529.10 × 15,900.32
  4. Step 4: Simplify right side
    28,646.60x = 628,525,329.65
  5. Step 5: Solve for x
    x = 628,525,329.65/28,646.60
  6. Step 6: Final answer
    x = 21,940.66

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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.