Home / 19,872.72-29,803.14-14,309.28

Finding the Fourth Proportional to 19,872.72, 29,803.14 and 14,309.28

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Solution

The fourth proportional to 19,872.72, 29,803.14 and 14,309.28 is: 21,459.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.72 : 29,803.14 = 14,309.28 : x
  2. Step 2: Convert to fraction form
    19,872.72/29,803.14 = 14,309.28/x
  3. Step 3: Cross multiply
    19,872.72x = 29,803.14 × 14,309.28
  4. Step 4: Simplify right side
    19,872.72x = 426,461,475.14
  5. Step 5: Solve for x
    x = 426,461,475.14/19,872.72
  6. Step 6: Final answer
    x = 21,459.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.