Home / 12,707.76-19,045.56-6,458.40

Finding the Fourth Proportional to 12,707.76, 19,045.56 and 6,458.40

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Solution

The fourth proportional to 12,707.76, 19,045.56 and 6,458.40 is: 9,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,707.76 : 19,045.56 = 6,458.40 : x
  2. Step 2: Convert to fraction form
    12,707.76/19,045.56 = 6,458.40/x
  3. Step 3: Cross multiply
    12,707.76x = 19,045.56 × 6,458.40
  4. Step 4: Simplify right side
    12,707.76x = 123,003,844.70
  5. Step 5: Solve for x
    x = 123,003,844.70/12,707.76
  6. Step 6: Final answer
    x = 9,679.43

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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.