Home / 18,656.07-25,779.69-13,611.75

Finding the Fourth Proportional to 18,656.07, 25,779.69 and 13,611.75

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Solution

The fourth proportional to 18,656.07, 25,779.69 and 13,611.75 is: 18,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.07 : 25,779.69 = 13,611.75 : x
  2. Step 2: Convert to fraction form
    18,656.07/25,779.69 = 13,611.75/x
  3. Step 3: Cross multiply
    18,656.07x = 25,779.69 × 13,611.75
  4. Step 4: Simplify right side
    18,656.07x = 350,906,695.36
  5. Step 5: Solve for x
    x = 350,906,695.36/18,656.07
  6. Step 6: Final answer
    x = 18,809.25

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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.