Home / 14,279.81-19,707.05-7,994.21

Finding the Fourth Proportional to 14,279.81, 19,707.05 and 7,994.21

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Solution

The fourth proportional to 14,279.81, 19,707.05 and 7,994.21 is: 11,032.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.81 : 19,707.05 = 7,994.21 : x
  2. Step 2: Convert to fraction form
    14,279.81/19,707.05 = 7,994.21/x
  3. Step 3: Cross multiply
    14,279.81x = 19,707.05 × 7,994.21
  4. Step 4: Simplify right side
    14,279.81x = 157,542,256.21
  5. Step 5: Solve for x
    x = 157,542,256.21/14,279.81
  6. Step 6: Final answer
    x = 11,032.52

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Half scale
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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.