Home / 20,706,729.69-28,575,054.32-11,287,314.21

Finding the Fourth Proportional to 20,706,729.69, 28,575,054.32 and 11,287,314.21

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Solution

The fourth proportional to 20,706,729.69, 28,575,054.32 and 11,287,314.21 is: 15,576,366.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706,729.69 : 28,575,054.32 = 11,287,314.21 : x
  2. Step 2: Convert to fraction form
    20,706,729.69/28,575,054.32 = 11,287,314.21/x
  3. Step 3: Cross multiply
    20,706,729.69x = 28,575,054.32 × 11,287,314.21
  4. Step 4: Simplify right side
    20,706,729.69x = 322,535,616,621,221.38
  5. Step 5: Solve for x
    x = 322,535,616,621,221.38/20,706,729.69
  6. Step 6: Final answer
    x = 15,576,366.79

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1.5x scale

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.