Home / 28,974,457.26-39,985,069.32-15,921,719.55

Finding the Fourth Proportional to 28,974,457.26, 39,985,069.32 and 15,921,719.55

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Solution

The fourth proportional to 28,974,457.26, 39,985,069.32 and 15,921,719.55 is: 21,972,147.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974,457.26 : 39,985,069.32 = 15,921,719.55 : x
  2. Step 2: Convert to fraction form
    28,974,457.26/39,985,069.32 = 15,921,719.55/x
  3. Step 3: Cross multiply
    28,974,457.26x = 39,985,069.32 × 15,921,719.55
  4. Step 4: Simplify right side
    28,974,457.26x = 636,631,059,900,349.25
  5. Step 5: Solve for x
    x = 636,631,059,900,349.25/28,974,457.26
  6. Step 6: Final answer
    x = 21,972,147.89

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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.