Home / 30,887.60-42,625.44-21,329.46

Finding the Fourth Proportional to 30,887.60, 42,625.44 and 21,329.46

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Solution

The fourth proportional to 30,887.60, 42,625.44 and 21,329.46 is: 29,435.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,887.60 : 42,625.44 = 21,329.46 : x
  2. Step 2: Convert to fraction form
    30,887.60/42,625.44 = 21,329.46/x
  3. Step 3: Cross multiply
    30,887.60x = 42,625.44 × 21,329.46
  4. Step 4: Simplify right side
    30,887.60x = 909,177,617.46
  5. Step 5: Solve for x
    x = 909,177,617.46/30,887.60
  6. Step 6: Final answer
    x = 29,435.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.