Home / 21,276,955.50-31,919,917.05-6,898,902.18

Finding the Fourth Proportional to 21,276,955.50, 31,919,917.05 and 6,898,902.18

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Solution

The fourth proportional to 21,276,955.50, 31,919,917.05 and 6,898,902.18 is: 10,349,807.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,955.50 : 31,919,917.05 = 6,898,902.18 : x
  2. Step 2: Convert to fraction form
    21,276,955.50/31,919,917.05 = 6,898,902.18/x
  3. Step 3: Cross multiply
    21,276,955.50x = 31,919,917.05 × 6,898,902.18
  4. Step 4: Simplify right side
    21,276,955.50x = 220,212,385,321,664.16
  5. Step 5: Solve for x
    x = 220,212,385,321,664.16/21,276,955.50
  6. Step 6: Final answer
    x = 10,349,807.11

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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.