Home / 21,437.80-29,585.73-12,942.01

Finding the Fourth Proportional to 21,437.80, 29,585.73 and 12,942.01

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Solution

The fourth proportional to 21,437.80, 29,585.73 and 12,942.01 is: 17,860.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,437.80 : 29,585.73 = 12,942.01 : x
  2. Step 2: Convert to fraction form
    21,437.80/29,585.73 = 12,942.01/x
  3. Step 3: Cross multiply
    21,437.80x = 29,585.73 × 12,942.01
  4. Step 4: Simplify right side
    21,437.80x = 382,898,813.52
  5. Step 5: Solve for x
    x = 382,898,813.52/21,437.80
  6. Step 6: Final answer
    x = 17,860.92

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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.