Home / 20,382,299.31-28,118,304.73-12,117,672.13

Finding the Fourth Proportional to 20,382,299.31, 28,118,304.73 and 12,117,672.13

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Solution

The fourth proportional to 20,382,299.31, 28,118,304.73 and 12,117,672.13 is: 16,716,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382,299.31 : 28,118,304.73 = 12,117,672.13 : x
  2. Step 2: Convert to fraction form
    20,382,299.31/28,118,304.73 = 12,117,672.13/x
  3. Step 3: Cross multiply
    20,382,299.31x = 28,118,304.73 × 12,117,672.13
  4. Step 4: Simplify right side
    20,382,299.31x = 340,728,397,569,568.19
  5. Step 5: Solve for x
    x = 340,728,397,569,568.19/20,382,299.31
  6. Step 6: Final answer
    x = 16,716,877.34

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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.