Home / 20,416.41-30,610.20-9,307.80

Finding the Fourth Proportional to 20,416.41, 30,610.20 and 9,307.80

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Solution

The fourth proportional to 20,416.41, 30,610.20 and 9,307.80 is: 13,955.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.41 : 30,610.20 = 9,307.80 : x
  2. Step 2: Convert to fraction form
    20,416.41/30,610.20 = 9,307.80/x
  3. Step 3: Cross multiply
    20,416.41x = 30,610.20 × 9,307.80
  4. Step 4: Simplify right side
    20,416.41x = 284,913,619.56
  5. Step 5: Solve for x
    x = 284,913,619.56/20,416.41
  6. Step 6: Final answer
    x = 13,955.13

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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.