Home / 21,097.85-31,619.09-15,525.10

Finding the Fourth Proportional to 21,097.85, 31,619.09 and 15,525.10

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Solution

The fourth proportional to 21,097.85, 31,619.09 and 15,525.10 is: 23,267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.85 : 31,619.09 = 15,525.10 : x
  2. Step 2: Convert to fraction form
    21,097.85/31,619.09 = 15,525.10/x
  3. Step 3: Cross multiply
    21,097.85x = 31,619.09 × 15,525.10
  4. Step 4: Simplify right side
    21,097.85x = 490,889,534.16
  5. Step 5: Solve for x
    x = 490,889,534.16/21,097.85
  6. Step 6: Final answer
    x = 23,267.28

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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.