Home / 20,851.53-31,298.37-18,495.06

Finding the Fourth Proportional to 20,851.53, 31,298.37 and 18,495.06

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Solution

The fourth proportional to 20,851.53, 31,298.37 and 18,495.06 is: 27,761.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.53 : 31,298.37 = 18,495.06 : x
  2. Step 2: Convert to fraction form
    20,851.53/31,298.37 = 18,495.06/x
  3. Step 3: Cross multiply
    20,851.53x = 31,298.37 × 18,495.06
  4. Step 4: Simplify right side
    20,851.53x = 578,865,231.05
  5. Step 5: Solve for x
    x = 578,865,231.05/20,851.53
  6. Step 6: Final answer
    x = 27,761.28

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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.