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Finding the Fourth Proportional to 28,290.58, 39,041.02 and 15,544.58

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Solution

The fourth proportional to 28,290.58, 39,041.02 and 15,544.58 is: 21,451.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.58 : 39,041.02 = 15,544.58 : x
  2. Step 2: Convert to fraction form
    28,290.58/39,041.02 = 15,544.58/x
  3. Step 3: Cross multiply
    28,290.58x = 39,041.02 × 15,544.58
  4. Step 4: Simplify right side
    28,290.58x = 606,876,258.67
  5. Step 5: Solve for x
    x = 606,876,258.67/28,290.58
  6. Step 6: Final answer
    x = 21,451.53

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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.