Home / 20,031.64-27,618.55-12,848.90

Finding the Fourth Proportional to 20,031.64, 27,618.55 and 12,848.90

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Solution

The fourth proportional to 20,031.64, 27,618.55 and 12,848.90 is: 17,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.64 : 27,618.55 = 12,848.90 : x
  2. Step 2: Convert to fraction form
    20,031.64/27,618.55 = 12,848.90/x
  3. Step 3: Cross multiply
    20,031.64x = 27,618.55 × 12,848.90
  4. Step 4: Simplify right side
    20,031.64x = 354,867,816.88
  5. Step 5: Solve for x
    x = 354,867,816.88/20,031.64
  6. Step 6: Final answer
    x = 17,715.37

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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.