Home / 38,980.31-53,792.88-21,075.32

Finding the Fourth Proportional to 38,980.31, 53,792.88 and 21,075.32

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Solution

The fourth proportional to 38,980.31, 53,792.88 and 21,075.32 is: 29,083.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,980.31 : 53,792.88 = 21,075.32 : x
  2. Step 2: Convert to fraction form
    38,980.31/53,792.88 = 21,075.32/x
  3. Step 3: Cross multiply
    38,980.31x = 53,792.88 × 21,075.32
  4. Step 4: Simplify right side
    38,980.31x = 1,133,702,215.17
  5. Step 5: Solve for x
    x = 1,133,702,215.17/38,980.31
  6. Step 6: Final answer
    x = 29,083.97

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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.