Home / 15,715.36-21,573.41-15,567.64

Finding the Fourth Proportional to 15,715.36, 21,573.41 and 15,567.64

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Solution

The fourth proportional to 15,715.36, 21,573.41 and 15,567.64 is: 21,370.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.36 : 21,573.41 = 15,567.64 : x
  2. Step 2: Convert to fraction form
    15,715.36/21,573.41 = 15,567.64/x
  3. Step 3: Cross multiply
    15,715.36x = 21,573.41 × 15,567.64
  4. Step 4: Simplify right side
    15,715.36x = 335,847,080.45
  5. Step 5: Solve for x
    x = 335,847,080.45/15,715.36
  6. Step 6: Final answer
    x = 21,370.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.