Home / 18,645.36-25,734-12,357.60

Finding the Fourth Proportional to 18,645.36, 25,734 and 12,357.60

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Solution

The fourth proportional to 18,645.36, 25,734 and 12,357.60 is: 17,055.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.36 : 25,734 = 12,357.60 : x
  2. Step 2: Convert to fraction form
    18,645.36/25,734 = 12,357.60/x
  3. Step 3: Cross multiply
    18,645.36x = 25,734 × 12,357.60
  4. Step 4: Simplify right side
    18,645.36x = 318,010,478.40
  5. Step 5: Solve for x
    x = 318,010,478.40/18,645.36
  6. Step 6: Final answer
    x = 17,055.74

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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.