Home / 20,742.16-31,101.36-14,176.48

Finding the Fourth Proportional to 20,742.16, 31,101.36 and 14,176.48

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Solution

The fourth proportional to 20,742.16, 31,101.36 and 14,176.48 is: 21,256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.16 : 31,101.36 = 14,176.48 : x
  2. Step 2: Convert to fraction form
    20,742.16/31,101.36 = 14,176.48/x
  3. Step 3: Cross multiply
    20,742.16x = 31,101.36 × 14,176.48
  4. Step 4: Simplify right side
    20,742.16x = 440,907,808.01
  5. Step 5: Solve for x
    x = 440,907,808.01/20,742.16
  6. Step 6: Final answer
    x = 21,256.60

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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.