Home / 21,002.09-31,430.46-17,210.03

Finding the Fourth Proportional to 21,002.09, 31,430.46 and 17,210.03

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Solution

The fourth proportional to 21,002.09, 31,430.46 and 17,210.03 is: 25,755.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.09 : 31,430.46 = 17,210.03 : x
  2. Step 2: Convert to fraction form
    21,002.09/31,430.46 = 17,210.03/x
  3. Step 3: Cross multiply
    21,002.09x = 31,430.46 × 17,210.03
  4. Step 4: Simplify right side
    21,002.09x = 540,919,002.36
  5. Step 5: Solve for x
    x = 540,919,002.36/21,002.09
  6. Step 6: Final answer
    x = 25,755.49

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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.