Home / 28,786.32-39,724.20-16,209.36

Finding the Fourth Proportional to 28,786.32, 39,724.20 and 16,209.36

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Solution

The fourth proportional to 28,786.32, 39,724.20 and 16,209.36 is: 22,368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.32 : 39,724.20 = 16,209.36 : x
  2. Step 2: Convert to fraction form
    28,786.32/39,724.20 = 16,209.36/x
  3. Step 3: Cross multiply
    28,786.32x = 39,724.20 × 16,209.36
  4. Step 4: Simplify right side
    28,786.32x = 643,903,858.51
  5. Step 5: Solve for x
    x = 643,903,858.51/28,786.32
  6. Step 6: Final answer
    x = 22,368.40

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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.