Home / 19,721.20-29,567.40-8,028.40

Finding the Fourth Proportional to 19,721.20, 29,567.40 and 8,028.40

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Solution

The fourth proportional to 19,721.20, 29,567.40 and 8,028.40 is: 12,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.20 : 29,567.40 = 8,028.40 : x
  2. Step 2: Convert to fraction form
    19,721.20/29,567.40 = 8,028.40/x
  3. Step 3: Cross multiply
    19,721.20x = 29,567.40 × 8,028.40
  4. Step 4: Simplify right side
    19,721.20x = 237,378,914.16
  5. Step 5: Solve for x
    x = 237,378,914.16/19,721.20
  6. Step 6: Final answer
    x = 12,036.74

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1.5x scale

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.