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Finding the Fourth Proportional to 18,281.76, 27,422.64 and 4,430.76

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Solution

The fourth proportional to 18,281.76, 27,422.64 and 4,430.76 is: 6,646.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.76 : 27,422.64 = 4,430.76 : x
  2. Step 2: Convert to fraction form
    18,281.76/27,422.64 = 4,430.76/x
  3. Step 3: Cross multiply
    18,281.76x = 27,422.64 × 4,430.76
  4. Step 4: Simplify right side
    18,281.76x = 121,503,056.77
  5. Step 5: Solve for x
    x = 121,503,056.77/18,281.76
  6. Step 6: Final answer
    x = 6,646.14

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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.