Home / 20,292,761.60-27,989,174.40-12,955,639.04

Finding the Fourth Proportional to 20,292,761.60, 27,989,174.40 and 12,955,639.04

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Solution

The fourth proportional to 20,292,761.60, 27,989,174.40 and 12,955,639.04 is: 17,869,309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292,761.60 : 27,989,174.40 = 12,955,639.04 : x
  2. Step 2: Convert to fraction form
    20,292,761.60/27,989,174.40 = 12,955,639.04/x
  3. Step 3: Cross multiply
    20,292,761.60x = 27,989,174.40 × 12,955,639.04
  4. Step 4: Simplify right side
    20,292,761.60x = 362,617,640,554,008.56
  5. Step 5: Solve for x
    x = 362,617,640,554,008.56/20,292,761.60
  6. Step 6: Final answer
    x = 17,869,309.64

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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.