Home / 21,689,240.58-29,931,457.32-11,899,506.78

Finding the Fourth Proportional to 21,689,240.58, 29,931,457.32 and 11,899,506.78

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Solution

The fourth proportional to 21,689,240.58, 29,931,457.32 and 11,899,506.78 is: 16,421,486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,689,240.58 : 29,931,457.32 = 11,899,506.78 : x
  2. Step 2: Convert to fraction form
    21,689,240.58/29,931,457.32 = 11,899,506.78/x
  3. Step 3: Cross multiply
    21,689,240.58x = 29,931,457.32 × 11,899,506.78
  4. Step 4: Simplify right side
    21,689,240.58x = 356,169,579,314,620.62
  5. Step 5: Solve for x
    x = 356,169,579,314,620.62/21,689,240.58
  6. Step 6: Final answer
    x = 16,421,486.87

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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.