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Finding the Fourth Proportional to 14,437.93, 19,921.99 and 8,064.20

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Solution

The fourth proportional to 14,437.93, 19,921.99 and 8,064.20 is: 11,127.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,437.93 : 19,921.99 = 8,064.20 : x
  2. Step 2: Convert to fraction form
    14,437.93/19,921.99 = 8,064.20/x
  3. Step 3: Cross multiply
    14,437.93x = 19,921.99 × 8,064.20
  4. Step 4: Simplify right side
    14,437.93x = 160,654,911.76
  5. Step 5: Solve for x
    x = 160,654,911.76/14,437.93
  6. Step 6: Final answer
    x = 11,127.28

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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.