Home / 20,445.85-30,654.42-7,955.35

Finding the Fourth Proportional to 20,445.85, 30,654.42 and 7,955.35

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Solution

The fourth proportional to 20,445.85, 30,654.42 and 7,955.35 is: 11,927.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.85 : 30,654.42 = 7,955.35 : x
  2. Step 2: Convert to fraction form
    20,445.85/30,654.42 = 7,955.35/x
  3. Step 3: Cross multiply
    20,445.85x = 30,654.42 × 7,955.35
  4. Step 4: Simplify right side
    20,445.85x = 243,866,563.51
  5. Step 5: Solve for x
    x = 243,866,563.51/20,445.85
  6. Step 6: Final answer
    x = 11,927.44

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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.