Home / 13,987.38-19,300.32-8,322.30

Finding the Fourth Proportional to 13,987.38, 19,300.32 and 8,322.30

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Solution

The fourth proportional to 13,987.38, 19,300.32 and 8,322.30 is: 11,483.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.38 : 19,300.32 = 8,322.30 : x
  2. Step 2: Convert to fraction form
    13,987.38/19,300.32 = 8,322.30/x
  3. Step 3: Cross multiply
    13,987.38x = 19,300.32 × 8,322.30
  4. Step 4: Simplify right side
    13,987.38x = 160,623,053.14
  5. Step 5: Solve for x
    x = 160,623,053.14/13,987.38
  6. Step 6: Final answer
    x = 11,483.43

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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.