Home / 21,287.04-29,368.52-12,329.68

Finding the Fourth Proportional to 21,287.04, 29,368.52 and 12,329.68

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Solution

The fourth proportional to 21,287.04, 29,368.52 and 12,329.68 is: 17,010.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.04 : 29,368.52 = 12,329.68 : x
  2. Step 2: Convert to fraction form
    21,287.04/29,368.52 = 12,329.68/x
  3. Step 3: Cross multiply
    21,287.04x = 29,368.52 × 12,329.68
  4. Step 4: Simplify right side
    21,287.04x = 362,104,453.67
  5. Step 5: Solve for x
    x = 362,104,453.67/21,287.04
  6. Step 6: Final answer
    x = 17,010.56

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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.