Home / 28,763,876.72-39,693,913.98-15,711,143.96

Finding the Fourth Proportional to 28,763,876.72, 39,693,913.98 and 15,711,143.96

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Solution

The fourth proportional to 28,763,876.72, 39,693,913.98 and 15,711,143.96 is: 21,681,249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,763,876.72 : 39,693,913.98 = 15,711,143.96 : x
  2. Step 2: Convert to fraction form
    28,763,876.72/39,693,913.98 = 15,711,143.96/x
  3. Step 3: Cross multiply
    28,763,876.72x = 39,693,913.98 × 15,711,143.96
  4. Step 4: Simplify right side
    28,763,876.72x = 623,636,796,875,636.50
  5. Step 5: Solve for x
    x = 623,636,796,875,636.50/28,763,876.72
  6. Step 6: Final answer
    x = 21,681,249.82

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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.