Home / 15,136,495.40-20,888,421.54-8,261,129

Finding the Fourth Proportional to 15,136,495.40, 20,888,421.54 and 8,261,129

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Solution

The fourth proportional to 15,136,495.40, 20,888,421.54 and 8,261,129 is: 11,400,389.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,136,495.40 : 20,888,421.54 = 8,261,129 : x
  2. Step 2: Convert to fraction form
    15,136,495.40/20,888,421.54 = 8,261,129/x
  3. Step 3: Cross multiply
    15,136,495.40x = 20,888,421.54 × 8,261,129
  4. Step 4: Simplify right side
    15,136,495.40x = 172,561,944,948,318.66
  5. Step 5: Solve for x
    x = 172,561,944,948,318.66/15,136,495.40
  6. Step 6: Final answer
    x = 11,400,389.61

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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.