Home / 20,643.99-28,378.97-17,762.10

Finding the Fourth Proportional to 20,643.99, 28,378.97 and 17,762.10

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Solution

The fourth proportional to 20,643.99, 28,378.97 and 17,762.10 is: 24,417.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.99 : 28,378.97 = 17,762.10 : x
  2. Step 2: Convert to fraction form
    20,643.99/28,378.97 = 17,762.10/x
  3. Step 3: Cross multiply
    20,643.99x = 28,378.97 × 17,762.10
  4. Step 4: Simplify right side
    20,643.99x = 504,070,014.23
  5. Step 5: Solve for x
    x = 504,070,014.23/20,643.99
  6. Step 6: Final answer
    x = 24,417.28

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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.