Home / 30,280.70-45,421.07-13,621.27

Finding the Fourth Proportional to 30,280.70, 45,421.07 and 13,621.27

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Solution

The fourth proportional to 30,280.70, 45,421.07 and 13,621.27 is: 20,431.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,280.70 : 45,421.07 = 13,621.27 : x
  2. Step 2: Convert to fraction form
    30,280.70/45,421.07 = 13,621.27/x
  3. Step 3: Cross multiply
    30,280.70x = 45,421.07 × 13,621.27
  4. Step 4: Simplify right side
    30,280.70x = 618,692,590.05
  5. Step 5: Solve for x
    x = 618,692,590.05/30,280.70
  6. Step 6: Final answer
    x = 20,431.91

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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.