Home / 30,154.64-45,253.01-12,386.66

Finding the Fourth Proportional to 30,154.64, 45,253.01 and 12,386.66

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Solution

The fourth proportional to 30,154.64, 45,253.01 and 12,386.66 is: 18,588.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.64 : 45,253.01 = 12,386.66 : x
  2. Step 2: Convert to fraction form
    30,154.64/45,253.01 = 12,386.66/x
  3. Step 3: Cross multiply
    30,154.64x = 45,253.01 × 12,386.66
  4. Step 4: Simplify right side
    30,154.64x = 560,533,453.55
  5. Step 5: Solve for x
    x = 560,533,453.55/30,154.64
  6. Step 6: Final answer
    x = 18,588.63

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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.