Home / 21,417.26-31,972.61-18,615.51

Finding the Fourth Proportional to 21,417.26, 31,972.61 and 18,615.51

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Solution

The fourth proportional to 21,417.26, 31,972.61 and 18,615.51 is: 27,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,417.26 : 31,972.61 = 18,615.51 : x
  2. Step 2: Convert to fraction form
    21,417.26/31,972.61 = 18,615.51/x
  3. Step 3: Cross multiply
    21,417.26x = 31,972.61 × 18,615.51
  4. Step 4: Simplify right side
    21,417.26x = 595,186,348.10
  5. Step 5: Solve for x
    x = 595,186,348.10/21,417.26
  6. Step 6: Final answer
    x = 27,790.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.