Home / 20,713,412.69-28,596,756.53-18,415,213.31

Finding the Fourth Proportional to 20,713,412.69, 28,596,756.53 and 18,415,213.31

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Solution

The fourth proportional to 20,713,412.69, 28,596,756.53 and 18,415,213.31 is: 25,423,882.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713,412.69 : 28,596,756.53 = 18,415,213.31 : x
  2. Step 2: Convert to fraction form
    20,713,412.69/28,596,756.53 = 18,415,213.31/x
  3. Step 3: Cross multiply
    20,713,412.69x = 28,596,756.53 × 18,415,213.31
  4. Step 4: Simplify right side
    20,713,412.69x = 526,615,371,488,029.75
  5. Step 5: Solve for x
    x = 526,615,371,488,029.75/20,713,412.69
  6. Step 6: Final answer
    x = 25,423,882.55

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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.