Home / 14,221.89-21,339.52-8,955.68

Finding the Fourth Proportional to 14,221.89, 21,339.52 and 8,955.68

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Solution

The fourth proportional to 14,221.89, 21,339.52 and 8,955.68 is: 13,437.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.89 : 21,339.52 = 8,955.68 : x
  2. Step 2: Convert to fraction form
    14,221.89/21,339.52 = 8,955.68/x
  3. Step 3: Cross multiply
    14,221.89x = 21,339.52 × 8,955.68
  4. Step 4: Simplify right side
    14,221.89x = 191,109,783.39
  5. Step 5: Solve for x
    x = 191,109,783.39/14,221.89
  6. Step 6: Final answer
    x = 13,437.72

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1.5x scale

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.