Home / 13,529.19-18,663.77-8,490.92

Finding the Fourth Proportional to 13,529.19, 18,663.77 and 8,490.92

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Solution

The fourth proportional to 13,529.19, 18,663.77 and 8,490.92 is: 11,713.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.19 : 18,663.77 = 8,490.92 : x
  2. Step 2: Convert to fraction form
    13,529.19/18,663.77 = 8,490.92/x
  3. Step 3: Cross multiply
    13,529.19x = 18,663.77 × 8,490.92
  4. Step 4: Simplify right side
    13,529.19x = 158,472,535.51
  5. Step 5: Solve for x
    x = 158,472,535.51/13,529.19
  6. Step 6: Final answer
    x = 11,713.38

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Double scale
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Similar ratio
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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.