Home / 17,926.40-26,889.60-12,972.80

Finding the Fourth Proportional to 17,926.40, 26,889.60 and 12,972.80

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Solution

The fourth proportional to 17,926.40, 26,889.60 and 12,972.80 is: 19,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,926.40 : 26,889.60 = 12,972.80 : x
  2. Step 2: Convert to fraction form
    17,926.40/26,889.60 = 12,972.80/x
  3. Step 3: Cross multiply
    17,926.40x = 26,889.60 × 12,972.80
  4. Step 4: Simplify right side
    17,926.40x = 348,833,402.88
  5. Step 5: Solve for x
    x = 348,833,402.88/17,926.40
  6. Step 6: Final answer
    x = 19,459.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.