Home / 21,389.40-32,103.72-11,538.36

Finding the Fourth Proportional to 21,389.40, 32,103.72 and 11,538.36

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Solution

The fourth proportional to 21,389.40, 32,103.72 and 11,538.36 is: 17,318.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.40 : 32,103.72 = 11,538.36 : x
  2. Step 2: Convert to fraction form
    21,389.40/32,103.72 = 11,538.36/x
  3. Step 3: Cross multiply
    21,389.40x = 32,103.72 × 11,538.36
  4. Step 4: Simplify right side
    21,389.40x = 370,424,278.70
  5. Step 5: Solve for x
    x = 370,424,278.70/21,389.40
  6. Step 6: Final answer
    x = 17,318.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.