Home / 28,451.19-39,262.61-15,875.94

Finding the Fourth Proportional to 28,451.19, 39,262.61 and 15,875.94

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Solution

The fourth proportional to 28,451.19, 39,262.61 and 15,875.94 is: 21,908.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.19 : 39,262.61 = 15,875.94 : x
  2. Step 2: Convert to fraction form
    28,451.19/39,262.61 = 15,875.94/x
  3. Step 3: Cross multiply
    28,451.19x = 39,262.61 × 15,875.94
  4. Step 4: Simplify right side
    28,451.19x = 623,330,761.22
  5. Step 5: Solve for x
    x = 623,330,761.22/28,451.19
  6. Step 6: Final answer
    x = 21,908.78

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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.