Home / 28,341.92-39,110.64-16,405.76

Finding the Fourth Proportional to 28,341.92, 39,110.64 and 16,405.76

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Solution

The fourth proportional to 28,341.92, 39,110.64 and 16,405.76 is: 22,639.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,341.92 : 39,110.64 = 16,405.76 : x
  2. Step 2: Convert to fraction form
    28,341.92/39,110.64 = 16,405.76/x
  3. Step 3: Cross multiply
    28,341.92x = 39,110.64 × 16,405.76
  4. Step 4: Simplify right side
    28,341.92x = 641,639,773.29
  5. Step 5: Solve for x
    x = 641,639,773.29/28,341.92
  6. Step 6: Final answer
    x = 22,639.25

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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.