Home / 20,277.90-30,404.70-10,436.40

Finding the Fourth Proportional to 20,277.90, 30,404.70 and 10,436.40

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Solution

The fourth proportional to 20,277.90, 30,404.70 and 10,436.40 is: 15,648.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.90 : 30,404.70 = 10,436.40 : x
  2. Step 2: Convert to fraction form
    20,277.90/30,404.70 = 10,436.40/x
  3. Step 3: Cross multiply
    20,277.90x = 30,404.70 × 10,436.40
  4. Step 4: Simplify right side
    20,277.90x = 317,315,611.08
  5. Step 5: Solve for x
    x = 317,315,611.08/20,277.90
  6. Step 6: Final answer
    x = 15,648.35

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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.