Home / 28,263.96-39,004.10-15,688.68

Finding the Fourth Proportional to 28,263.96, 39,004.10 and 15,688.68

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Solution

The fourth proportional to 28,263.96, 39,004.10 and 15,688.68 is: 21,650.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.96 : 39,004.10 = 15,688.68 : x
  2. Step 2: Convert to fraction form
    28,263.96/39,004.10 = 15,688.68/x
  3. Step 3: Cross multiply
    28,263.96x = 39,004.10 × 15,688.68
  4. Step 4: Simplify right side
    28,263.96x = 611,922,843.59
  5. Step 5: Solve for x
    x = 611,922,843.59/28,263.96
  6. Step 6: Final answer
    x = 21,650.29

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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.