Home / 28,507.08-39,338.97-15,585.82

Finding the Fourth Proportional to 28,507.08, 39,338.97 and 15,585.82

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Solution

The fourth proportional to 28,507.08, 39,338.97 and 15,585.82 is: 21,507.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.08 : 39,338.97 = 15,585.82 : x
  2. Step 2: Convert to fraction form
    28,507.08/39,338.97 = 15,585.82/x
  3. Step 3: Cross multiply
    28,507.08x = 39,338.97 × 15,585.82
  4. Step 4: Simplify right side
    28,507.08x = 613,130,105.41
  5. Step 5: Solve for x
    x = 613,130,105.41/28,507.08
  6. Step 6: Final answer
    x = 21,507.99

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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.