Home / 15,863.39-21,881.55-10,205.51

Finding the Fourth Proportional to 15,863.39, 21,881.55 and 10,205.51

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Solution

The fourth proportional to 15,863.39, 21,881.55 and 10,205.51 is: 14,077.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,863.39 : 21,881.55 = 10,205.51 : x
  2. Step 2: Convert to fraction form
    15,863.39/21,881.55 = 10,205.51/x
  3. Step 3: Cross multiply
    15,863.39x = 21,881.55 × 10,205.51
  4. Step 4: Simplify right side
    15,863.39x = 223,312,306.20
  5. Step 5: Solve for x
    x = 223,312,306.20/15,863.39
  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.