Home / 28,628.50-39,507.43-15,881.93

Finding the Fourth Proportional to 28,628.50, 39,507.43 and 15,881.93

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Solution

The fourth proportional to 28,628.50, 39,507.43 and 15,881.93 is: 21,917.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,628.50 : 39,507.43 = 15,881.93 : x
  2. Step 2: Convert to fraction form
    28,628.50/39,507.43 = 15,881.93/x
  3. Step 3: Cross multiply
    28,628.50x = 39,507.43 × 15,881.93
  4. Step 4: Simplify right side
    28,628.50x = 627,454,400.66
  5. Step 5: Solve for x
    x = 627,454,400.66/28,628.50
  6. Step 6: Final answer
    x = 21,917.13

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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.