Home / 19,515.40-29,316.30-13,683.40

Finding the Fourth Proportional to 19,515.40, 29,316.30 and 13,683.40

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Solution

The fourth proportional to 19,515.40, 29,316.30 and 13,683.40 is: 20,555.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,515.40 : 29,316.30 = 13,683.40 : x
  2. Step 2: Convert to fraction form
    19,515.40/29,316.30 = 13,683.40/x
  3. Step 3: Cross multiply
    19,515.40x = 29,316.30 × 13,683.40
  4. Step 4: Simplify right side
    19,515.40x = 401,146,659.42
  5. Step 5: Solve for x
    x = 401,146,659.42/19,515.40
  6. Step 6: Final answer
    x = 20,555.39

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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.