Home / 28,338.22-39,106.74-15,591.13

Finding the Fourth Proportional to 28,338.22, 39,106.74 and 15,591.13

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Solution

The fourth proportional to 28,338.22, 39,106.74 and 15,591.13 is: 21,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.22 : 39,106.74 = 15,591.13 : x
  2. Step 2: Convert to fraction form
    28,338.22/39,106.74 = 15,591.13/x
  3. Step 3: Cross multiply
    28,338.22x = 39,106.74 × 15,591.13
  4. Step 4: Simplify right side
    28,338.22x = 609,718,267.22
  5. Step 5: Solve for x
    x = 609,718,267.22/28,338.22
  6. Step 6: Final answer
    x = 21,515.76

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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.