Home / 12,631.32-17,430.88-7,325.80

Finding the Fourth Proportional to 12,631.32, 17,430.88 and 7,325.80

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Solution

The fourth proportional to 12,631.32, 17,430.88 and 7,325.80 is: 10,109.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.32 : 17,430.88 = 7,325.80 : x
  2. Step 2: Convert to fraction form
    12,631.32/17,430.88 = 7,325.80/x
  3. Step 3: Cross multiply
    12,631.32x = 17,430.88 × 7,325.80
  4. Step 4: Simplify right side
    12,631.32x = 127,695,140.70
  5. Step 5: Solve for x
    x = 127,695,140.70/12,631.32
  6. Step 6: Final answer
    x = 10,109.41

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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.