Home / 15,270.50-21,069.21-9,219.26

Finding the Fourth Proportional to 15,270.50, 21,069.21 and 9,219.26

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Solution

The fourth proportional to 15,270.50, 21,069.21 and 9,219.26 is: 12,720.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.50 : 21,069.21 = 9,219.26 : x
  2. Step 2: Convert to fraction form
    15,270.50/21,069.21 = 9,219.26/x
  3. Step 3: Cross multiply
    15,270.50x = 21,069.21 × 9,219.26
  4. Step 4: Simplify right side
    15,270.50x = 194,242,524.98
  5. Step 5: Solve for x
    x = 194,242,524.98/15,270.50
  6. Step 6: Final answer
    x = 12,720.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.