Home / 14,288.32-21,421.14-6,488.02

Finding the Fourth Proportional to 14,288.32, 21,421.14 and 6,488.02

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Solution

The fourth proportional to 14,288.32, 21,421.14 and 6,488.02 is: 9,726.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.32 : 21,421.14 = 6,488.02 : x
  2. Step 2: Convert to fraction form
    14,288.32/21,421.14 = 6,488.02/x
  3. Step 3: Cross multiply
    14,288.32x = 21,421.14 × 6,488.02
  4. Step 4: Simplify right side
    14,288.32x = 138,980,784.74
  5. Step 5: Solve for x
    x = 138,980,784.74/14,288.32
  6. Step 6: Final answer
    x = 9,726.88

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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.