Home / 13,875.12-19,147.44-7,587.36

Finding the Fourth Proportional to 13,875.12, 19,147.44 and 7,587.36

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Solution

The fourth proportional to 13,875.12, 19,147.44 and 7,587.36 is: 10,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.12 : 19,147.44 = 7,587.36 : x
  2. Step 2: Convert to fraction form
    13,875.12/19,147.44 = 7,587.36/x
  3. Step 3: Cross multiply
    13,875.12x = 19,147.44 × 7,587.36
  4. Step 4: Simplify right side
    13,875.12x = 145,278,520.36
  5. Step 5: Solve for x
    x = 145,278,520.36/13,875.12
  6. Step 6: Final answer
    x = 10,470.43

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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.