Home / 12,430.71-18,618.72-9,635.45

Finding the Fourth Proportional to 12,430.71, 18,618.72 and 9,635.45

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Solution

The fourth proportional to 12,430.71, 18,618.72 and 9,635.45 is: 14,431.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.71 : 18,618.72 = 9,635.45 : x
  2. Step 2: Convert to fraction form
    12,430.71/18,618.72 = 9,635.45/x
  3. Step 3: Cross multiply
    12,430.71x = 18,618.72 × 9,635.45
  4. Step 4: Simplify right side
    12,430.71x = 179,399,652.53
  5. Step 5: Solve for x
    x = 179,399,652.53/12,430.71
  6. Step 6: Final answer
    x = 14,431.97

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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.