Home / 13,905.13-19,189.55-7,617.91

Finding the Fourth Proportional to 13,905.13, 19,189.55 and 7,617.91

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Solution

The fourth proportional to 13,905.13, 19,189.55 and 7,617.91 is: 10,512.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.13 : 19,189.55 = 7,617.91 : x
  2. Step 2: Convert to fraction form
    13,905.13/19,189.55 = 7,617.91/x
  3. Step 3: Cross multiply
    13,905.13x = 19,189.55 × 7,617.91
  4. Step 4: Simplify right side
    13,905.13x = 146,184,130.80
  5. Step 5: Solve for x
    x = 146,184,130.80/13,905.13
  6. Step 6: Final answer
    x = 10,512.97

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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.