Home / 21,047.70-31,615.29-16,695.57

Finding the Fourth Proportional to 21,047.70, 31,615.29 and 16,695.57

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Solution

The fourth proportional to 21,047.70, 31,615.29 and 16,695.57 is: 25,078.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047.70 : 31,615.29 = 16,695.57 : x
  2. Step 2: Convert to fraction form
    21,047.70/31,615.29 = 16,695.57/x
  3. Step 3: Cross multiply
    21,047.70x = 31,615.29 × 16,695.57
  4. Step 4: Simplify right side
    21,047.70x = 527,835,287.27
  5. Step 5: Solve for x
    x = 527,835,287.27/21,047.70
  6. Step 6: Final answer
    x = 25,078.05

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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.