Home / 14,109.19-19,472.70-8,142.91

Finding the Fourth Proportional to 14,109.19, 19,472.70 and 8,142.91

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Solution

The fourth proportional to 14,109.19, 19,472.70 and 8,142.91 is: 11,238.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.19 : 19,472.70 = 8,142.91 : x
  2. Step 2: Convert to fraction form
    14,109.19/19,472.70 = 8,142.91/x
  3. Step 3: Cross multiply
    14,109.19x = 19,472.70 × 8,142.91
  4. Step 4: Simplify right side
    14,109.19x = 158,564,443.56
  5. Step 5: Solve for x
    x = 158,564,443.56/14,109.19
  6. Step 6: Final answer
    x = 11,238.38

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Half scale
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Double scale
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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.