Home / 20,258.10-30,387.15-19,711.35

Finding the Fourth Proportional to 20,258.10, 30,387.15 and 19,711.35

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Solution

The fourth proportional to 20,258.10, 30,387.15 and 19,711.35 is: 29,567.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.10 : 30,387.15 = 19,711.35 : x
  2. Step 2: Convert to fraction form
    20,258.10/30,387.15 = 19,711.35/x
  3. Step 3: Cross multiply
    20,258.10x = 30,387.15 × 19,711.35
  4. Step 4: Simplify right side
    20,258.10x = 598,971,749.15
  5. Step 5: Solve for x
    x = 598,971,749.15/20,258.10
  6. Step 6: Final answer
    x = 29,567.03

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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.