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Finding the Fourth Proportional to 14,208.77, 19,608.35 and 7,921.14

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Solution

The fourth proportional to 14,208.77, 19,608.35 and 7,921.14 is: 10,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,208.77 : 19,608.35 = 7,921.14 : x
  2. Step 2: Convert to fraction form
    14,208.77/19,608.35 = 7,921.14/x
  3. Step 3: Cross multiply
    14,208.77x = 19,608.35 × 7,921.14
  4. Step 4: Simplify right side
    14,208.77x = 155,320,445.91
  5. Step 5: Solve for x
    x = 155,320,445.91/14,208.77
  6. Step 6: Final answer
    x = 10,931.31

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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.