Home / 21,253.32-31,719.29-20,700.36

Finding the Fourth Proportional to 21,253.32, 31,719.29 and 20,700.36

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Solution

The fourth proportional to 21,253.32, 31,719.29 and 20,700.36 is: 30,894.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.32 : 31,719.29 = 20,700.36 : x
  2. Step 2: Convert to fraction form
    21,253.32/31,719.29 = 20,700.36/x
  3. Step 3: Cross multiply
    21,253.32x = 31,719.29 × 20,700.36
  4. Step 4: Simplify right side
    21,253.32x = 656,600,721.94
  5. Step 5: Solve for x
    x = 656,600,721.94/21,253.32
  6. Step 6: Final answer
    x = 30,894.03

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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.