Home / 28,300.94-39,053.77-15,724.88

Finding the Fourth Proportional to 28,300.94, 39,053.77 and 15,724.88

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Solution

The fourth proportional to 28,300.94, 39,053.77 and 15,724.88 is: 21,699.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,300.94 : 39,053.77 = 15,724.88 : x
  2. Step 2: Convert to fraction form
    28,300.94/39,053.77 = 15,724.88/x
  3. Step 3: Cross multiply
    28,300.94x = 39,053.77 × 15,724.88
  4. Step 4: Simplify right side
    28,300.94x = 614,115,572.90
  5. Step 5: Solve for x
    x = 614,115,572.90/28,300.94
  6. Step 6: Final answer
    x = 21,699.48

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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.