Home / 12,642.03-18,947.66-8,945.33

Finding the Fourth Proportional to 12,642.03, 18,947.66 and 8,945.33

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Solution

The fourth proportional to 12,642.03, 18,947.66 and 8,945.33 is: 13,407.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.03 : 18,947.66 = 8,945.33 : x
  2. Step 2: Convert to fraction form
    12,642.03/18,947.66 = 8,945.33/x
  3. Step 3: Cross multiply
    12,642.03x = 18,947.66 × 8,945.33
  4. Step 4: Simplify right side
    12,642.03x = 169,492,931.96
  5. Step 5: Solve for x
    x = 169,492,931.96/12,642.03
  6. Step 6: Final answer
    x = 13,407.10

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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.