Home / 19,237.20-28,855.80-11,888.40

Finding the Fourth Proportional to 19,237.20, 28,855.80 and 11,888.40

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Solution

The fourth proportional to 19,237.20, 28,855.80 and 11,888.40 is: 17,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,237.20 : 28,855.80 = 11,888.40 : x
  2. Step 2: Convert to fraction form
    19,237.20/28,855.80 = 11,888.40/x
  3. Step 3: Cross multiply
    19,237.20x = 28,855.80 × 11,888.40
  4. Step 4: Simplify right side
    19,237.20x = 343,049,292.72
  5. Step 5: Solve for x
    x = 343,049,292.72/19,237.20
  6. Step 6: Final answer
    x = 17,832.60

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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.