Home / 12,630.51-18,945.75-4,306.32

Finding the Fourth Proportional to 12,630.51, 18,945.75 and 4,306.32

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Solution

The fourth proportional to 12,630.51, 18,945.75 and 4,306.32 is: 6,459.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.51 : 18,945.75 = 4,306.32 : x
  2. Step 2: Convert to fraction form
    12,630.51/18,945.75 = 4,306.32/x
  3. Step 3: Cross multiply
    12,630.51x = 18,945.75 × 4,306.32
  4. Step 4: Simplify right side
    12,630.51x = 81,586,462.14
  5. Step 5: Solve for x
    x = 81,586,462.14/12,630.51
  6. Step 6: Final answer
    x = 6,459.47

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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.