Home / 20,840.49-31,263.98-6,986.25

Finding the Fourth Proportional to 20,840.49, 31,263.98 and 6,986.25

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Solution

The fourth proportional to 20,840.49, 31,263.98 and 6,986.25 is: 10,480.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.49 : 31,263.98 = 6,986.25 : x
  2. Step 2: Convert to fraction form
    20,840.49/31,263.98 = 6,986.25/x
  3. Step 3: Cross multiply
    20,840.49x = 31,263.98 × 6,986.25
  4. Step 4: Simplify right side
    20,840.49x = 218,417,997.74
  5. Step 5: Solve for x
    x = 218,417,997.74/20,840.49
  6. Step 6: Final answer
    x = 10,480.46

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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.