Home / 28,438.70-39,192.26-20,467.08

Finding the Fourth Proportional to 28,438.70, 39,192.26 and 20,467.08

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Solution

The fourth proportional to 28,438.70, 39,192.26 and 20,467.08 is: 28,206.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.70 : 39,192.26 = 20,467.08 : x
  2. Step 2: Convert to fraction form
    28,438.70/39,192.26 = 20,467.08/x
  3. Step 3: Cross multiply
    28,438.70x = 39,192.26 × 20,467.08
  4. Step 4: Simplify right side
    28,438.70x = 802,151,018.47
  5. Step 5: Solve for x
    x = 802,151,018.47/28,438.70
  6. Step 6: Final answer
    x = 28,206.32

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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.