Home / 21,050.40-31,537.20-17,133.60

Finding the Fourth Proportional to 21,050.40, 31,537.20 and 17,133.60

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Solution

The fourth proportional to 21,050.40, 31,537.20 and 17,133.60 is: 25,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.40 : 31,537.20 = 17,133.60 : x
  2. Step 2: Convert to fraction form
    21,050.40/31,537.20 = 17,133.60/x
  3. Step 3: Cross multiply
    21,050.40x = 31,537.20 × 17,133.60
  4. Step 4: Simplify right side
    21,050.40x = 540,345,769.92
  5. Step 5: Solve for x
    x = 540,345,769.92/21,050.40
  6. Step 6: Final answer
    x = 25,669.15

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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.