Home / 21,020,912.70-31,531,369.05-16,769,384.70

Finding the Fourth Proportional to 21,020,912.70, 31,531,369.05 and 16,769,384.70

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Solution

The fourth proportional to 21,020,912.70, 31,531,369.05 and 16,769,384.70 is: 25,154,077.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020,912.70 : 31,531,369.05 = 16,769,384.70 : x
  2. Step 2: Convert to fraction form
    21,020,912.70/31,531,369.05 = 16,769,384.70/x
  3. Step 3: Cross multiply
    21,020,912.70x = 31,531,369.05 × 16,769,384.70
  4. Step 4: Simplify right side
    21,020,912.70x = 528,761,657,717,123.50
  5. Step 5: Solve for x
    x = 528,761,657,717,123.50/21,020,912.70
  6. Step 6: Final answer
    x = 25,154,077.05

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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.