Home / 20,463,421-28,238,528.10-11,642,041.48

Finding the Fourth Proportional to 20,463,421, 28,238,528.10 and 11,642,041.48

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Solution

The fourth proportional to 20,463,421, 28,238,528.10 and 11,642,041.48 is: 16,065,452.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463,421 : 28,238,528.10 = 11,642,041.48 : x
  2. Step 2: Convert to fraction form
    20,463,421/28,238,528.10 = 11,642,041.48/x
  3. Step 3: Cross multiply
    20,463,421x = 28,238,528.10 × 11,642,041.48
  4. Step 4: Simplify right side
    20,463,421x = 328,754,115,474,345.62
  5. Step 5: Solve for x
    x = 328,754,115,474,345.62/20,463,421
  6. Step 6: Final answer
    x = 16,065,452.37

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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.