Home / 20,902.24-28,801.74-19,457.20

Finding the Fourth Proportional to 20,902.24, 28,801.74 and 19,457.20

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Solution

The fourth proportional to 20,902.24, 28,801.74 and 19,457.20 is: 26,810.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.24 : 28,801.74 = 19,457.20 : x
  2. Step 2: Convert to fraction form
    20,902.24/28,801.74 = 19,457.20/x
  3. Step 3: Cross multiply
    20,902.24x = 28,801.74 × 19,457.20
  4. Step 4: Simplify right side
    20,902.24x = 560,401,215.53
  5. Step 5: Solve for x
    x = 560,401,215.53/20,902.24
  6. Step 6: Final answer
    x = 26,810.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.