Home / 19,993.12-29,980.40-11,675.60

Finding the Fourth Proportional to 19,993.12, 29,980.40 and 11,675.60

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Solution

The fourth proportional to 19,993.12, 29,980.40 and 11,675.60 is: 17,507.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.12 : 29,980.40 = 11,675.60 : x
  2. Step 2: Convert to fraction form
    19,993.12/29,980.40 = 11,675.60/x
  3. Step 3: Cross multiply
    19,993.12x = 29,980.40 × 11,675.60
  4. Step 4: Simplify right side
    19,993.12x = 350,039,158.24
  5. Step 5: Solve for x
    x = 350,039,158.24/19,993.12
  6. Step 6: Final answer
    x = 17,507.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.