Home / 28,179.29-38,886.94-15,603.77

Finding the Fourth Proportional to 28,179.29, 38,886.94 and 15,603.77

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Solution

The fourth proportional to 28,179.29, 38,886.94 and 15,603.77 is: 21,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.29 : 38,886.94 = 15,603.77 : x
  2. Step 2: Convert to fraction form
    28,179.29/38,886.94 = 15,603.77/x
  3. Step 3: Cross multiply
    28,179.29x = 38,886.94 × 15,603.77
  4. Step 4: Simplify right side
    28,179.29x = 606,782,867.76
  5. Step 5: Solve for x
    x = 606,782,867.76/28,179.29
  6. Step 6: Final answer
    x = 21,532.94

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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.