Home / 39,651.32-59,482.64-12,991.61

Finding the Fourth Proportional to 39,651.32, 59,482.64 and 12,991.61

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Solution

The fourth proportional to 39,651.32, 59,482.64 and 12,991.61 is: 19,489.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,651.32 : 59,482.64 = 12,991.61 : x
  2. Step 2: Convert to fraction form
    39,651.32/59,482.64 = 12,991.61/x
  3. Step 3: Cross multiply
    39,651.32x = 59,482.64 × 12,991.61
  4. Step 4: Simplify right side
    39,651.32x = 772,775,260.65
  5. Step 5: Solve for x
    x = 772,775,260.65/39,651.32
  6. Step 6: Final answer
    x = 19,489.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.