Home / 20,900.84-31,307.34-16,965.32

Finding the Fourth Proportional to 20,900.84, 31,307.34 and 16,965.32

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Solution

The fourth proportional to 20,900.84, 31,307.34 and 16,965.32 is: 25,412.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.84 : 31,307.34 = 16,965.32 : x
  2. Step 2: Convert to fraction form
    20,900.84/31,307.34 = 16,965.32/x
  3. Step 3: Cross multiply
    20,900.84x = 31,307.34 × 16,965.32
  4. Step 4: Simplify right side
    20,900.84x = 531,139,041.45
  5. Step 5: Solve for x
    x = 531,139,041.45/20,900.84
  6. Step 6: Final answer
    x = 25,412.33

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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.