Home / 21,052.08-31,395.14-20,769.60

Finding the Fourth Proportional to 21,052.08, 31,395.14 and 20,769.60

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Solution

The fourth proportional to 21,052.08, 31,395.14 and 20,769.60 is: 30,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,052.08 : 31,395.14 = 20,769.60 : x
  2. Step 2: Convert to fraction form
    21,052.08/31,395.14 = 20,769.60/x
  3. Step 3: Cross multiply
    21,052.08x = 31,395.14 × 20,769.60
  4. Step 4: Simplify right side
    21,052.08x = 652,064,499.74
  5. Step 5: Solve for x
    x = 652,064,499.74/21,052.08
  6. Step 6: Final answer
    x = 30,973.88

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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.