Home / 19,127.88-28,686.24-7,438.32

Finding the Fourth Proportional to 19,127.88, 28,686.24 and 7,438.32

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Solution

The fourth proportional to 19,127.88, 28,686.24 and 7,438.32 is: 11,155.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,127.88 : 28,686.24 = 7,438.32 : x
  2. Step 2: Convert to fraction form
    19,127.88/28,686.24 = 7,438.32/x
  3. Step 3: Cross multiply
    19,127.88x = 28,686.24 × 7,438.32
  4. Step 4: Simplify right side
    19,127.88x = 213,377,432.72
  5. Step 5: Solve for x
    x = 213,377,432.72/19,127.88
  6. Step 6: Final answer
    x = 11,155.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.