Home / 20,295-28,008.18-11,914.20

Finding the Fourth Proportional to 20,295, 28,008.18 and 11,914.20

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Solution

The fourth proportional to 20,295, 28,008.18 and 11,914.20 is: 16,442.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295 : 28,008.18 = 11,914.20 : x
  2. Step 2: Convert to fraction form
    20,295/28,008.18 = 11,914.20/x
  3. Step 3: Cross multiply
    20,295x = 28,008.18 × 11,914.20
  4. Step 4: Simplify right side
    20,295x = 333,695,058.16
  5. Step 5: Solve for x
    x = 333,695,058.16/20,295
  6. Step 6: Final answer
    x = 16,442.23

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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.