Home / 19,653.18-29,483.35-9,121.75

Finding the Fourth Proportional to 19,653.18, 29,483.35 and 9,121.75

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Solution

The fourth proportional to 19,653.18, 29,483.35 and 9,121.75 is: 13,684.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,653.18 : 29,483.35 = 9,121.75 : x
  2. Step 2: Convert to fraction form
    19,653.18/29,483.35 = 9,121.75/x
  3. Step 3: Cross multiply
    19,653.18x = 29,483.35 × 9,121.75
  4. Step 4: Simplify right side
    19,653.18x = 268,939,747.86
  5. Step 5: Solve for x
    x = 268,939,747.86/19,653.18
  6. Step 6: Final answer
    x = 13,684.29

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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.