Home / 28,455.41-39,268.61-15,708.36

Finding the Fourth Proportional to 28,455.41, 39,268.61 and 15,708.36

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Solution

The fourth proportional to 28,455.41, 39,268.61 and 15,708.36 is: 21,677.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.41 : 39,268.61 = 15,708.36 : x
  2. Step 2: Convert to fraction form
    28,455.41/39,268.61 = 15,708.36/x
  3. Step 3: Cross multiply
    28,455.41x = 39,268.61 × 15,708.36
  4. Step 4: Simplify right side
    28,455.41x = 616,845,384.04
  5. Step 5: Solve for x
    x = 616,845,384.04/28,455.41
  6. Step 6: Final answer
    x = 21,677.62

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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.