Home / 20,438,868.32-28,204,688.70-11,730,911.84

Finding the Fourth Proportional to 20,438,868.32, 28,204,688.70 and 11,730,911.84

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Solution

The fourth proportional to 20,438,868.32, 28,204,688.70 and 11,730,911.84 is: 16,188,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438,868.32 : 28,204,688.70 = 11,730,911.84 : x
  2. Step 2: Convert to fraction form
    20,438,868.32/28,204,688.70 = 11,730,911.84/x
  3. Step 3: Cross multiply
    20,438,868.32x = 28,204,688.70 × 11,730,911.84
  4. Step 4: Simplify right side
    20,438,868.32x = 330,866,716,614,344.19
  5. Step 5: Solve for x
    x = 330,866,716,614,344.19/20,438,868.32
  6. Step 6: Final answer
    x = 16,188,113.33

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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.