Home / 28,382.28-39,168.27-15,807.30

Finding the Fourth Proportional to 28,382.28, 39,168.27 and 15,807.30

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Solution

The fourth proportional to 28,382.28, 39,168.27 and 15,807.30 is: 21,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.28 : 39,168.27 = 15,807.30 : x
  2. Step 2: Convert to fraction form
    28,382.28/39,168.27 = 15,807.30/x
  3. Step 3: Cross multiply
    28,382.28x = 39,168.27 × 15,807.30
  4. Step 4: Simplify right side
    28,382.28x = 619,144,594.37
  5. Step 5: Solve for x
    x = 619,144,594.37/28,382.28
  6. Step 6: Final answer
    x = 21,814.48

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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.