Home / 21,966.40-32,853.60-19,643.20

Finding the Fourth Proportional to 21,966.40, 32,853.60 and 19,643.20

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Solution

The fourth proportional to 21,966.40, 32,853.60 and 19,643.20 is: 29,378.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.40 : 32,853.60 = 19,643.20 : x
  2. Step 2: Convert to fraction form
    21,966.40/32,853.60 = 19,643.20/x
  3. Step 3: Cross multiply
    21,966.40x = 32,853.60 × 19,643.20
  4. Step 4: Simplify right side
    21,966.40x = 645,349,835.52
  5. Step 5: Solve for x
    x = 645,349,835.52/21,966.40
  6. Step 6: Final answer
    x = 29,378.95

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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.