Home / 21,012,790.44-29,002,159.80-13,272,909.96

Finding the Fourth Proportional to 21,012,790.44, 29,002,159.80 and 13,272,909.96

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Solution

The fourth proportional to 21,012,790.44, 29,002,159.80 and 13,272,909.96 is: 18,319,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012,790.44 : 29,002,159.80 = 13,272,909.96 : x
  2. Step 2: Convert to fraction form
    21,012,790.44/29,002,159.80 = 13,272,909.96/x
  3. Step 3: Cross multiply
    21,012,790.44x = 29,002,159.80 × 13,272,909.96
  4. Step 4: Simplify right side
    21,012,790.44x = 384,943,055,670,931.62
  5. Step 5: Solve for x
    x = 384,943,055,670,931.62/21,012,790.44
  6. Step 6: Final answer
    x = 18,319,463.89

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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.