Home / 30,638.31-45,964.85-10,644.89

Finding the Fourth Proportional to 30,638.31, 45,964.85 and 10,644.89

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Solution

The fourth proportional to 30,638.31, 45,964.85 and 10,644.89 is: 15,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.31 : 45,964.85 = 10,644.89 : x
  2. Step 2: Convert to fraction form
    30,638.31/45,964.85 = 10,644.89/x
  3. Step 3: Cross multiply
    30,638.31x = 45,964.85 × 10,644.89
  4. Step 4: Simplify right side
    30,638.31x = 489,290,741.27
  5. Step 5: Solve for x
    x = 489,290,741.27/30,638.31
  6. Step 6: Final answer
    x = 15,969.90

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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.