Home / 20,690.84-31,030.79-5,900.60

Finding the Fourth Proportional to 20,690.84, 31,030.79 and 5,900.60

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Solution

The fourth proportional to 20,690.84, 31,030.79 and 5,900.60 is: 8,849.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.84 : 31,030.79 = 5,900.60 : x
  2. Step 2: Convert to fraction form
    20,690.84/31,030.79 = 5,900.60/x
  3. Step 3: Cross multiply
    20,690.84x = 31,030.79 × 5,900.60
  4. Step 4: Simplify right side
    20,690.84x = 183,100,094.82
  5. Step 5: Solve for x
    x = 183,100,094.82/20,690.84
  6. Step 6: Final answer
    x = 8,849.33

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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.