Home / 21,062,705.70-31,594,058.55-18,711,243.30

Finding the Fourth Proportional to 21,062,705.70, 31,594,058.55 and 18,711,243.30

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Solution

The fourth proportional to 21,062,705.70, 31,594,058.55 and 18,711,243.30 is: 28,066,864.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062,705.70 : 31,594,058.55 = 18,711,243.30 : x
  2. Step 2: Convert to fraction form
    21,062,705.70/31,594,058.55 = 18,711,243.30/x
  3. Step 3: Cross multiply
    21,062,705.70x = 31,594,058.55 × 18,711,243.30
  4. Step 4: Simplify right side
    21,062,705.70x = 591,164,116,363,495.25
  5. Step 5: Solve for x
    x = 591,164,116,363,495.25/21,062,705.70
  6. Step 6: Final answer
    x = 28,066,864.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.