Home / 21,016,314.88-29,001,856.51-12,320,279.21

Finding the Fourth Proportional to 21,016,314.88, 29,001,856.51 and 12,320,279.21

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Solution

The fourth proportional to 21,016,314.88, 29,001,856.51 and 12,320,279.21 is: 17,001,599.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016,314.88 : 29,001,856.51 = 12,320,279.21 : x
  2. Step 2: Convert to fraction form
    21,016,314.88/29,001,856.51 = 12,320,279.21/x
  3. Step 3: Cross multiply
    21,016,314.88x = 29,001,856.51 × 12,320,279.21
  4. Step 4: Simplify right side
    21,016,314.88x = 357,310,969,899,461.19
  5. Step 5: Solve for x
    x = 357,310,969,899,461.19/21,016,314.88
  6. Step 6: Final answer
    x = 17,001,599.57

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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.