Home / 20,453.96-30,681.21-7,307.12

Finding the Fourth Proportional to 20,453.96, 30,681.21 and 7,307.12

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Solution

The fourth proportional to 20,453.96, 30,681.21 and 7,307.12 is: 10,960.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.96 : 30,681.21 = 7,307.12 : x
  2. Step 2: Convert to fraction form
    20,453.96/30,681.21 = 7,307.12/x
  3. Step 3: Cross multiply
    20,453.96x = 30,681.21 × 7,307.12
  4. Step 4: Simplify right side
    20,453.96x = 224,191,283.22
  5. Step 5: Solve for x
    x = 224,191,283.22/20,453.96
  6. Step 6: Final answer
    x = 10,960.78

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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.