Home / 20,571,055.57-28,386,971.71-11,748,772.43

Finding the Fourth Proportional to 20,571,055.57, 28,386,971.71 and 11,748,772.43

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Solution

The fourth proportional to 20,571,055.57, 28,386,971.71 and 11,748,772.43 is: 16,212,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571,055.57 : 28,386,971.71 = 11,748,772.43 : x
  2. Step 2: Convert to fraction form
    20,571,055.57/28,386,971.71 = 11,748,772.43/x
  3. Step 3: Cross multiply
    20,571,055.57x = 28,386,971.71 × 11,748,772.43
  4. Step 4: Simplify right side
    20,571,055.57x = 333,512,070,426,331.19
  5. Step 5: Solve for x
    x = 333,512,070,426,331.19/20,571,055.57
  6. Step 6: Final answer
    x = 16,212,686.28

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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.