Home / 28,367.16-39,147.63-15,621.30

Finding the Fourth Proportional to 28,367.16, 39,147.63 and 15,621.30

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Solution

The fourth proportional to 28,367.16, 39,147.63 and 15,621.30 is: 21,557.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.16 : 39,147.63 = 15,621.30 : x
  2. Step 2: Convert to fraction form
    28,367.16/39,147.63 = 15,621.30/x
  3. Step 3: Cross multiply
    28,367.16x = 39,147.63 × 15,621.30
  4. Step 4: Simplify right side
    28,367.16x = 611,536,872.52
  5. Step 5: Solve for x
    x = 611,536,872.52/28,367.16
  6. Step 6: Final answer
    x = 21,557.92

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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.