Home / 19,323.04-28,929.40-12,729.12

Finding the Fourth Proportional to 19,323.04, 28,929.40 and 12,729.12

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Solution

The fourth proportional to 19,323.04, 28,929.40 and 12,729.12 is: 19,057.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,323.04 : 28,929.40 = 12,729.12 : x
  2. Step 2: Convert to fraction form
    19,323.04/28,929.40 = 12,729.12/x
  3. Step 3: Cross multiply
    19,323.04x = 28,929.40 × 12,729.12
  4. Step 4: Simplify right side
    19,323.04x = 368,245,804.13
  5. Step 5: Solve for x
    x = 368,245,804.13/19,323.04
  6. Step 6: Final answer
    x = 19,057.34

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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.