Home / 31,862.16-43,928.46-20,511.36

Finding the Fourth Proportional to 31,862.16, 43,928.46 and 20,511.36

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Solution

The fourth proportional to 31,862.16, 43,928.46 and 20,511.36 is: 28,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,862.16 : 43,928.46 = 20,511.36 : x
  2. Step 2: Convert to fraction form
    31,862.16/43,928.46 = 20,511.36/x
  3. Step 3: Cross multiply
    31,862.16x = 43,928.46 × 20,511.36
  4. Step 4: Simplify right side
    31,862.16x = 901,032,457.31
  5. Step 5: Solve for x
    x = 901,032,457.31/31,862.16
  6. Step 6: Final answer
    x = 28,279.08

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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.