Home / 20,938.24-28,896-13,852.24

Finding the Fourth Proportional to 20,938.24, 28,896 and 13,852.24

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Solution

The fourth proportional to 20,938.24, 28,896 and 13,852.24 is: 19,116.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.24 : 28,896 = 13,852.24 : x
  2. Step 2: Convert to fraction form
    20,938.24/28,896 = 13,852.24/x
  3. Step 3: Cross multiply
    20,938.24x = 28,896 × 13,852.24
  4. Step 4: Simplify right side
    20,938.24x = 400,274,327.04
  5. Step 5: Solve for x
    x = 400,274,327.04/20,938.24
  6. Step 6: Final answer
    x = 19,116.90

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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.