Home / 21,436.84-29,582.58-12,485.80

Finding the Fourth Proportional to 21,436.84, 29,582.58 and 12,485.80

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Solution

The fourth proportional to 21,436.84, 29,582.58 and 12,485.80 is: 17,230.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.84 : 29,582.58 = 12,485.80 : x
  2. Step 2: Convert to fraction form
    21,436.84/29,582.58 = 12,485.80/x
  3. Step 3: Cross multiply
    21,436.84x = 29,582.58 × 12,485.80
  4. Step 4: Simplify right side
    21,436.84x = 369,362,177.36
  5. Step 5: Solve for x
    x = 369,362,177.36/21,436.84
  6. Step 6: Final answer
    x = 17,230.25

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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.