Home / 21,288.02-31,948.43-17,138.18

Finding the Fourth Proportional to 21,288.02, 31,948.43 and 17,138.18

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Solution

The fourth proportional to 21,288.02, 31,948.43 and 17,138.18 is: 25,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.02 : 31,948.43 = 17,138.18 : x
  2. Step 2: Convert to fraction form
    21,288.02/31,948.43 = 17,138.18/x
  3. Step 3: Cross multiply
    21,288.02x = 31,948.43 × 17,138.18
  4. Step 4: Simplify right side
    21,288.02x = 547,537,938.24
  5. Step 5: Solve for x
    x = 547,537,938.24/21,288.02
  6. Step 6: Final answer
    x = 25,720.48

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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.