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Finding the Fourth Proportional to 12,898.56, 19,359.36 and 6,746.88

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Solution

The fourth proportional to 12,898.56, 19,359.36 and 6,746.88 is: 10,126.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.56 : 19,359.36 = 6,746.88 : x
  2. Step 2: Convert to fraction form
    12,898.56/19,359.36 = 6,746.88/x
  3. Step 3: Cross multiply
    12,898.56x = 19,359.36 × 6,746.88
  4. Step 4: Simplify right side
    12,898.56x = 130,615,278.80
  5. Step 5: Solve for x
    x = 130,615,278.80/12,898.56
  6. Step 6: Final answer
    x = 10,126.35

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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.