Home / 28,473.12-39,295.26-15,727.47

Finding the Fourth Proportional to 28,473.12, 39,295.26 and 15,727.47

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Solution

The fourth proportional to 28,473.12, 39,295.26 and 15,727.47 is: 21,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.12 : 39,295.26 = 15,727.47 : x
  2. Step 2: Convert to fraction form
    28,473.12/39,295.26 = 15,727.47/x
  3. Step 3: Cross multiply
    28,473.12x = 39,295.26 × 15,727.47
  4. Step 4: Simplify right side
    28,473.12x = 618,014,875.43
  5. Step 5: Solve for x
    x = 618,014,875.43/28,473.12
  6. Step 6: Final answer
    x = 21,705.20

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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.