Home / 13,987.68-19,301.28-8,322.56

Finding the Fourth Proportional to 13,987.68, 19,301.28 and 8,322.56

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Solution

The fourth proportional to 13,987.68, 19,301.28 and 8,322.56 is: 11,484.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.68 : 19,301.28 = 8,322.56 : x
  2. Step 2: Convert to fraction form
    13,987.68/19,301.28 = 8,322.56/x
  3. Step 3: Cross multiply
    13,987.68x = 19,301.28 × 8,322.56
  4. Step 4: Simplify right side
    13,987.68x = 160,636,060.88
  5. Step 5: Solve for x
    x = 160,636,060.88/13,987.68
  6. Step 6: Final answer
    x = 11,484.11

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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.