Home / 15,863.39-21,881.56-10,205.50

Finding the Fourth Proportional to 15,863.39, 21,881.56 and 10,205.50

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Solution

The fourth proportional to 15,863.39, 21,881.56 and 10,205.50 is: 14,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,863.39 : 21,881.56 = 10,205.50 : x
  2. Step 2: Convert to fraction form
    15,863.39/21,881.56 = 10,205.50/x
  3. Step 3: Cross multiply
    15,863.39x = 21,881.56 × 10,205.50
  4. Step 4: Simplify right side
    15,863.39x = 223,312,260.58
  5. Step 5: Solve for x
    x = 223,312,260.58/15,863.39
  6. Step 6: Final answer
    x = 14,077.21

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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.