Home / 20,943.36-31,538.97-15,140.52

Finding the Fourth Proportional to 20,943.36, 31,538.97 and 15,140.52

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Solution

The fourth proportional to 20,943.36, 31,538.97 and 15,140.52 is: 22,800.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.36 : 31,538.97 = 15,140.52 : x
  2. Step 2: Convert to fraction form
    20,943.36/31,538.97 = 15,140.52/x
  3. Step 3: Cross multiply
    20,943.36x = 31,538.97 × 15,140.52
  4. Step 4: Simplify right side
    20,943.36x = 477,516,406.06
  5. Step 5: Solve for x
    x = 477,516,406.06/20,943.36
  6. Step 6: Final answer
    x = 22,800.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.