Home / 15,315,971.80-21,136,044.96-8,346,651.42

Finding the Fourth Proportional to 15,315,971.80, 21,136,044.96 and 8,346,651.42

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Solution

The fourth proportional to 15,315,971.80, 21,136,044.96 and 8,346,651.42 is: 11,518,381.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315,971.80 : 21,136,044.96 = 8,346,651.42 : x
  2. Step 2: Convert to fraction form
    15,315,971.80/21,136,044.96 = 8,346,651.42/x
  3. Step 3: Cross multiply
    15,315,971.80x = 21,136,044.96 × 8,346,651.42
  4. Step 4: Simplify right side
    15,315,971.80x = 176,415,199,678,567.84
  5. Step 5: Solve for x
    x = 176,415,199,678,567.84/15,315,971.80
  6. Step 6: Final answer
    x = 11,518,381.07

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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.