Home / 21,579,915.29-29,779,934.64-11,790,148.78

Finding the Fourth Proportional to 21,579,915.29, 29,779,934.64 and 11,790,148.78

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Solution

The fourth proportional to 21,579,915.29, 29,779,934.64 and 11,790,148.78 is: 16,270,214.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579,915.29 : 29,779,934.64 = 11,790,148.78 : x
  2. Step 2: Convert to fraction form
    21,579,915.29/29,779,934.64 = 11,790,148.78/x
  3. Step 3: Cross multiply
    21,579,915.29x = 29,779,934.64 × 11,790,148.78
  4. Step 4: Simplify right side
    21,579,915.29x = 351,109,859,922,941.19
  5. Step 5: Solve for x
    x = 351,109,859,922,941.19/21,579,915.29
  6. Step 6: Final answer
    x = 16,270,214.93

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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.