Home / 20,316.85-30,477.30-7,663.40

Finding the Fourth Proportional to 20,316.85, 30,477.30 and 7,663.40

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Solution

The fourth proportional to 20,316.85, 30,477.30 and 7,663.40 is: 11,495.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.85 : 30,477.30 = 7,663.40 : x
  2. Step 2: Convert to fraction form
    20,316.85/30,477.30 = 7,663.40/x
  3. Step 3: Cross multiply
    20,316.85x = 30,477.30 × 7,663.40
  4. Step 4: Simplify right side
    20,316.85x = 233,559,817.01
  5. Step 5: Solve for x
    x = 233,559,817.01/20,316.85
  6. Step 6: Final answer
    x = 11,495.87

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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.