Home / 21,421,075.80-29,553,694.86-13,690,643.16

Finding the Fourth Proportional to 21,421,075.80, 29,553,694.86 and 13,690,643.16

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Solution

The fourth proportional to 21,421,075.80, 29,553,694.86 and 13,690,643.16 is: 18,888,364.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421,075.80 : 29,553,694.86 = 13,690,643.16 : x
  2. Step 2: Convert to fraction form
    21,421,075.80/29,553,694.86 = 13,690,643.16/x
  3. Step 3: Cross multiply
    21,421,075.80x = 29,553,694.86 × 13,690,643.16
  4. Step 4: Simplify right side
    21,421,075.80x = 404,609,090,387,786.12
  5. Step 5: Solve for x
    x = 404,609,090,387,786.12/21,421,075.80
  6. Step 6: Final answer
    x = 18,888,364.63

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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.