Home / 21,969.01-30,316.03-13,017.34

Finding the Fourth Proportional to 21,969.01, 30,316.03 and 13,017.34

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Solution

The fourth proportional to 21,969.01, 30,316.03 and 13,017.34 is: 17,963.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.01 : 30,316.03 = 13,017.34 : x
  2. Step 2: Convert to fraction form
    21,969.01/30,316.03 = 13,017.34/x
  3. Step 3: Cross multiply
    21,969.01x = 30,316.03 × 13,017.34
  4. Step 4: Simplify right side
    21,969.01x = 394,634,069.96
  5. Step 5: Solve for x
    x = 394,634,069.96/21,969.01
  6. Step 6: Final answer
    x = 17,963.22

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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.