Home / 28,554.92-39,402.31-15,807.14

Finding the Fourth Proportional to 28,554.92, 39,402.31 and 15,807.14

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Solution

The fourth proportional to 28,554.92, 39,402.31 and 15,807.14 is: 21,811.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.92 : 39,402.31 = 15,807.14 : x
  2. Step 2: Convert to fraction form
    28,554.92/39,402.31 = 15,807.14/x
  3. Step 3: Cross multiply
    28,554.92x = 39,402.31 × 15,807.14
  4. Step 4: Simplify right side
    28,554.92x = 622,837,830.49
  5. Step 5: Solve for x
    x = 622,837,830.49/28,554.92
  6. Step 6: Final answer
    x = 21,811.93

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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.