Home / 13,305.81-18,363.68-7,642.33

Finding the Fourth Proportional to 13,305.81, 18,363.68 and 7,642.33

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Solution

The fourth proportional to 13,305.81, 18,363.68 and 7,642.33 is: 10,547.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.81 : 18,363.68 = 7,642.33 : x
  2. Step 2: Convert to fraction form
    13,305.81/18,363.68 = 7,642.33/x
  3. Step 3: Cross multiply
    13,305.81x = 18,363.68 × 7,642.33
  4. Step 4: Simplify right side
    13,305.81x = 140,341,172.54
  5. Step 5: Solve for x
    x = 140,341,172.54/13,305.81
  6. Step 6: Final answer
    x = 10,547.36

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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.