Home / 12,889.23-19,337.48-7,628.88

Finding the Fourth Proportional to 12,889.23, 19,337.48 and 7,628.88

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Solution

The fourth proportional to 12,889.23, 19,337.48 and 7,628.88 is: 11,445.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.23 : 19,337.48 = 7,628.88 : x
  2. Step 2: Convert to fraction form
    12,889.23/19,337.48 = 7,628.88/x
  3. Step 3: Cross multiply
    12,889.23x = 19,337.48 × 7,628.88
  4. Step 4: Simplify right side
    12,889.23x = 147,523,314.42
  5. Step 5: Solve for x
    x = 147,523,314.42/12,889.23
  6. Step 6: Final answer
    x = 11,445.47

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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.