Home / 10,288.96-14,213.28-8,190.40

Finding the Fourth Proportional to 10,288.96, 14,213.28 and 8,190.40

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Solution

The fourth proportional to 10,288.96, 14,213.28 and 8,190.40 is: 11,314.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,288.96 : 14,213.28 = 8,190.40 : x
  2. Step 2: Convert to fraction form
    10,288.96/14,213.28 = 8,190.40/x
  3. Step 3: Cross multiply
    10,288.96x = 14,213.28 × 8,190.40
  4. Step 4: Simplify right side
    10,288.96x = 116,412,448.51
  5. Step 5: Solve for x
    x = 116,412,448.51/10,288.96
  6. Step 6: Final answer
    x = 11,314.31

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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.