Home / 28,555.67-39,405.38-15,634.59

Finding the Fourth Proportional to 28,555.67, 39,405.38 and 15,634.59

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Solution

The fourth proportional to 28,555.67, 39,405.38 and 15,634.59 is: 21,574.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.67 : 39,405.38 = 15,634.59 : x
  2. Step 2: Convert to fraction form
    28,555.67/39,405.38 = 15,634.59/x
  3. Step 3: Cross multiply
    28,555.67x = 39,405.38 × 15,634.59
  4. Step 4: Simplify right side
    28,555.67x = 616,086,881.92
  5. Step 5: Solve for x
    x = 616,086,881.92/28,555.67
  6. Step 6: Final answer
    x = 21,574.94

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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.