Home / 13,987.12-19,301.65-8,014.63

Finding the Fourth Proportional to 13,987.12, 19,301.65 and 8,014.63

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Solution

The fourth proportional to 13,987.12, 19,301.65 and 8,014.63 is: 11,059.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.12 : 19,301.65 = 8,014.63 : x
  2. Step 2: Convert to fraction form
    13,987.12/19,301.65 = 8,014.63/x
  3. Step 3: Cross multiply
    13,987.12x = 19,301.65 × 8,014.63
  4. Step 4: Simplify right side
    13,987.12x = 154,695,583.14
  5. Step 5: Solve for x
    x = 154,695,583.14/13,987.12
  6. Step 6: Final answer
    x = 11,059.86

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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.