Home / 28,974,458.76-39,985,071.39-15,921,721.05

Finding the Fourth Proportional to 28,974,458.76, 39,985,071.39 and 15,921,721.05

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Solution

The fourth proportional to 28,974,458.76, 39,985,071.39 and 15,921,721.05 is: 21,972,149.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974,458.76 : 39,985,071.39 = 15,921,721.05 : x
  2. Step 2: Convert to fraction form
    28,974,458.76/39,985,071.39 = 15,921,721.05/x
  3. Step 3: Cross multiply
    28,974,458.76x = 39,985,071.39 × 15,921,721.05
  4. Step 4: Simplify right side
    28,974,458.76x = 636,631,152,835,915.75
  5. Step 5: Solve for x
    x = 636,631,152,835,915.75/28,974,458.76
  6. Step 6: Final answer
    x = 21,972,149.96

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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.