Home / 21,010.10-31,485.45-11,654.24

Finding the Fourth Proportional to 21,010.10, 31,485.45 and 11,654.24

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Solution

The fourth proportional to 21,010.10, 31,485.45 and 11,654.24 is: 17,464.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.10 : 31,485.45 = 11,654.24 : x
  2. Step 2: Convert to fraction form
    21,010.10/31,485.45 = 11,654.24/x
  3. Step 3: Cross multiply
    21,010.10x = 31,485.45 × 11,654.24
  4. Step 4: Simplify right side
    21,010.10x = 366,938,990.81
  5. Step 5: Solve for x
    x = 366,938,990.81/21,010.10
  6. Step 6: Final answer
    x = 17,464.89

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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.