Home / 20,421,293.85-28,180,669.72-11,128,674.29

Finding the Fourth Proportional to 20,421,293.85, 28,180,669.72 and 11,128,674.29

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Solution

The fourth proportional to 20,421,293.85, 28,180,669.72 and 11,128,674.29 is: 15,357,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,293.85 : 28,180,669.72 = 11,128,674.29 : x
  2. Step 2: Convert to fraction form
    20,421,293.85/28,180,669.72 = 11,128,674.29/x
  3. Step 3: Cross multiply
    20,421,293.85x = 28,180,669.72 × 11,128,674.29
  4. Step 4: Simplify right side
    20,421,293.85x = 313,613,494,753,462.06
  5. Step 5: Solve for x
    x = 313,613,494,753,462.06/20,421,293.85
  6. Step 6: Final answer
    x = 15,357,180.45

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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.