Home / 21,959.64-30,304.02-12,528.36

Finding the Fourth Proportional to 21,959.64, 30,304.02 and 12,528.36

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Solution

The fourth proportional to 21,959.64, 30,304.02 and 12,528.36 is: 17,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.64 : 30,304.02 = 12,528.36 : x
  2. Step 2: Convert to fraction form
    21,959.64/30,304.02 = 12,528.36/x
  3. Step 3: Cross multiply
    21,959.64x = 30,304.02 × 12,528.36
  4. Step 4: Simplify right side
    21,959.64x = 379,659,672.01
  5. Step 5: Solve for x
    x = 379,659,672.01/21,959.64
  6. Step 6: Final answer
    x = 17,288.98

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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.