Home / 21,020,064.70-31,514,964.76-12,916,297.39

Finding the Fourth Proportional to 21,020,064.70, 31,514,964.76 and 12,916,297.39

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Solution

The fourth proportional to 21,020,064.70, 31,514,964.76 and 12,916,297.39 is: 19,365,147.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020,064.70 : 31,514,964.76 = 12,916,297.39 : x
  2. Step 2: Convert to fraction form
    21,020,064.70/31,514,964.76 = 12,916,297.39/x
  3. Step 3: Cross multiply
    21,020,064.70x = 31,514,964.76 × 12,916,297.39
  4. Step 4: Simplify right side
    21,020,064.70x = 407,056,657,075,530
  5. Step 5: Solve for x
    x = 407,056,657,075,530/21,020,064.70
  6. Step 6: Final answer
    x = 19,365,147.68

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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.