Home / 28,554.57-39,407.04-15,807.87

Finding the Fourth Proportional to 28,554.57, 39,407.04 and 15,807.87

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Solution

The fourth proportional to 28,554.57, 39,407.04 and 15,807.87 is: 21,815.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.57 : 39,407.04 = 15,807.87 : x
  2. Step 2: Convert to fraction form
    28,554.57/39,407.04 = 15,807.87/x
  3. Step 3: Cross multiply
    28,554.57x = 39,407.04 × 15,807.87
  4. Step 4: Simplify right side
    28,554.57x = 622,941,365.40
  5. Step 5: Solve for x
    x = 622,941,365.40/28,554.57
  6. Step 6: Final answer
    x = 21,815.82

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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.