Home / 28,143.96-38,829.27-16,659.47

Finding the Fourth Proportional to 28,143.96, 38,829.27 and 16,659.47

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Solution

The fourth proportional to 28,143.96, 38,829.27 and 16,659.47 is: 22,984.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.96 : 38,829.27 = 16,659.47 : x
  2. Step 2: Convert to fraction form
    28,143.96/38,829.27 = 16,659.47/x
  3. Step 3: Cross multiply
    28,143.96x = 38,829.27 × 16,659.47
  4. Step 4: Simplify right side
    28,143.96x = 646,875,218.23
  5. Step 5: Solve for x
    x = 646,875,218.23/28,143.96
  6. Step 6: Final answer
    x = 22,984.52

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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.