Home / 13,765.28-18,987.63-12,001.10

Finding the Fourth Proportional to 13,765.28, 18,987.63 and 12,001.10

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Solution

The fourth proportional to 13,765.28, 18,987.63 and 12,001.10 is: 16,554.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.28 : 18,987.63 = 12,001.10 : x
  2. Step 2: Convert to fraction form
    13,765.28/18,987.63 = 12,001.10/x
  3. Step 3: Cross multiply
    13,765.28x = 18,987.63 × 12,001.10
  4. Step 4: Simplify right side
    13,765.28x = 227,872,446.39
  5. Step 5: Solve for x
    x = 227,872,446.39/13,765.28
  6. Step 6: Final answer
    x = 16,554.15

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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.