Home / 18,427.07-25,403.60-15,583.03

Finding the Fourth Proportional to 18,427.07, 25,403.60 and 15,583.03

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Solution

The fourth proportional to 18,427.07, 25,403.60 and 15,583.03 is: 21,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.07 : 25,403.60 = 15,583.03 : x
  2. Step 2: Convert to fraction form
    18,427.07/25,403.60 = 15,583.03/x
  3. Step 3: Cross multiply
    18,427.07x = 25,403.60 × 15,583.03
  4. Step 4: Simplify right side
    18,427.07x = 395,865,036.36
  5. Step 5: Solve for x
    x = 395,865,036.36/18,427.07
  6. Step 6: Final answer
    x = 21,482.80

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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.