Home / 30,266.61-45,423.60-20,971.86

Finding the Fourth Proportional to 30,266.61, 45,423.60 and 20,971.86

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Solution

The fourth proportional to 30,266.61, 45,423.60 and 20,971.86 is: 31,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,266.61 : 45,423.60 = 20,971.86 : x
  2. Step 2: Convert to fraction form
    30,266.61/45,423.60 = 20,971.86/x
  3. Step 3: Cross multiply
    30,266.61x = 45,423.60 × 20,971.86
  4. Step 4: Simplify right side
    30,266.61x = 952,617,504.39
  5. Step 5: Solve for x
    x = 952,617,504.39/30,266.61
  6. Step 6: Final answer
    x = 31,474.20

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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.