Home / 12,631.14-17,430.80-7,326.86

Finding the Fourth Proportional to 12,631.14, 17,430.80 and 7,326.86

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Solution

The fourth proportional to 12,631.14, 17,430.80 and 7,326.86 is: 10,110.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.14 : 17,430.80 = 7,326.86 : x
  2. Step 2: Convert to fraction form
    12,631.14/17,430.80 = 7,326.86/x
  3. Step 3: Cross multiply
    12,631.14x = 17,430.80 × 7,326.86
  4. Step 4: Simplify right side
    12,631.14x = 127,712,907.50
  5. Step 5: Solve for x
    x = 127,712,907.50/12,631.14
  6. Step 6: Final answer
    x = 10,110.96

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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.