Home / 15,525.44-21,378.40-13,907.20

Finding the Fourth Proportional to 15,525.44, 21,378.40 and 13,907.20

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Solution

The fourth proportional to 15,525.44, 21,378.40 and 13,907.20 is: 19,150.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,525.44 : 21,378.40 = 13,907.20 : x
  2. Step 2: Convert to fraction form
    15,525.44/21,378.40 = 13,907.20/x
  3. Step 3: Cross multiply
    15,525.44x = 21,378.40 × 13,907.20
  4. Step 4: Simplify right side
    15,525.44x = 297,313,684.48
  5. Step 5: Solve for x
    x = 297,313,684.48/15,525.44
  6. Step 6: Final answer
    x = 19,150.10

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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.