Home / 21,412,210,405.88-29,549,647,818.78-12,840,032,679.86

Finding the Fourth Proportional to 21,412,210,405.88, 29,549,647,818.78 and 12,840,032,679.86

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Solution

The fourth proportional to 21,412,210,405.88, 29,549,647,818.78 and 12,840,032,679.86 is: 17,719,723,301.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,412,210,405.88 : 29,549,647,818.78 = 12,840,032,679.86 : x
  2. Step 2: Convert to fraction form
    21,412,210,405.88/29,549,647,818.78 = 12,840,032,679.86/x
  3. Step 3: Cross multiply
    21,412,210,405.88x = 29,549,647,818.78 × 12,840,032,679.86
  4. Step 4: Simplify right side
    21,412,210,405.88x = 379,418,443,671,488,954,368
  5. Step 5: Solve for x
    x = 379,418,443,671,488,954,368/21,412,210,405.88
  6. Step 6: Final answer
    x = 17,719,723,301.77

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1.5x scale

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.