Home / 14,289-21,421.14-10,115.88

Finding the Fourth Proportional to 14,289, 21,421.14 and 10,115.88

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Solution

The fourth proportional to 14,289, 21,421.14 and 10,115.88 is: 15,165.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289 : 21,421.14 = 10,115.88 : x
  2. Step 2: Convert to fraction form
    14,289/21,421.14 = 10,115.88/x
  3. Step 3: Cross multiply
    14,289x = 21,421.14 × 10,115.88
  4. Step 4: Simplify right side
    14,289x = 216,693,681.70
  5. Step 5: Solve for x
    x = 216,693,681.70/14,289
  6. Step 6: Final answer
    x = 15,165.07

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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.