Home / 15,272.78-21,076.51-9,964.46

Finding the Fourth Proportional to 15,272.78, 21,076.51 and 9,964.46

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Solution

The fourth proportional to 15,272.78, 21,076.51 and 9,964.46 is: 13,751.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,272.78 : 21,076.51 = 9,964.46 : x
  2. Step 2: Convert to fraction form
    15,272.78/21,076.51 = 9,964.46/x
  3. Step 3: Cross multiply
    15,272.78x = 21,076.51 × 9,964.46
  4. Step 4: Simplify right side
    15,272.78x = 210,016,040.83
  5. Step 5: Solve for x
    x = 210,016,040.83/15,272.78
  6. Step 6: Final answer
    x = 13,751.00

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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.