Home / 15,222.64-21,021.60-14,394.28

Finding the Fourth Proportional to 15,222.64, 21,021.60 and 14,394.28

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Solution

The fourth proportional to 15,222.64, 21,021.60 and 14,394.28 is: 19,877.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.64 : 21,021.60 = 14,394.28 : x
  2. Step 2: Convert to fraction form
    15,222.64/21,021.60 = 14,394.28/x
  3. Step 3: Cross multiply
    15,222.64x = 21,021.60 × 14,394.28
  4. Step 4: Simplify right side
    15,222.64x = 302,590,796.45
  5. Step 5: Solve for x
    x = 302,590,796.45/15,222.64
  6. Step 6: Final answer
    x = 19,877.68

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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.