Home / 20,266.12-30,386.02-8,416.64

Finding the Fourth Proportional to 20,266.12, 30,386.02 and 8,416.64

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Solution

The fourth proportional to 20,266.12, 30,386.02 and 8,416.64 is: 12,619.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.12 : 30,386.02 = 8,416.64 : x
  2. Step 2: Convert to fraction form
    20,266.12/30,386.02 = 8,416.64/x
  3. Step 3: Cross multiply
    20,266.12x = 30,386.02 × 8,416.64
  4. Step 4: Simplify right side
    20,266.12x = 255,748,191.37
  5. Step 5: Solve for x
    x = 255,748,191.37/20,266.12
  6. Step 6: Final answer
    x = 12,619.49

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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.