Home / 13,285.04-18,331.75-7,619.49

Finding the Fourth Proportional to 13,285.04, 18,331.75 and 7,619.49

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Solution

The fourth proportional to 13,285.04, 18,331.75 and 7,619.49 is: 10,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.04 : 18,331.75 = 7,619.49 : x
  2. Step 2: Convert to fraction form
    13,285.04/18,331.75 = 7,619.49/x
  3. Step 3: Cross multiply
    13,285.04x = 18,331.75 × 7,619.49
  4. Step 4: Simplify right side
    13,285.04x = 139,678,585.81
  5. Step 5: Solve for x
    x = 139,678,585.81/13,285.04
  6. Step 6: Final answer
    x = 10,513.98

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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.