Home / 18,946.88-26,115.36-12,656.96

Finding the Fourth Proportional to 18,946.88, 26,115.36 and 12,656.96

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Solution

The fourth proportional to 18,946.88, 26,115.36 and 12,656.96 is: 17,445.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,946.88 : 26,115.36 = 12,656.96 : x
  2. Step 2: Convert to fraction form
    18,946.88/26,115.36 = 12,656.96/x
  3. Step 3: Cross multiply
    18,946.88x = 26,115.36 × 12,656.96
  4. Step 4: Simplify right side
    18,946.88x = 330,541,066.91
  5. Step 5: Solve for x
    x = 330,541,066.91/18,946.88
  6. Step 6: Final answer
    x = 17,445.67

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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.