Home / 15,660.36-21,594.42-11,890.44

Finding the Fourth Proportional to 15,660.36, 21,594.42 and 11,890.44

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Solution

The fourth proportional to 15,660.36, 21,594.42 and 11,890.44 is: 16,395.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.36 : 21,594.42 = 11,890.44 : x
  2. Step 2: Convert to fraction form
    15,660.36/21,594.42 = 11,890.44/x
  3. Step 3: Cross multiply
    15,660.36x = 21,594.42 × 11,890.44
  4. Step 4: Simplify right side
    15,660.36x = 256,767,155.34
  5. Step 5: Solve for x
    x = 256,767,155.34/15,660.36
  6. Step 6: Final answer
    x = 16,395.99

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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.