Home / 30,431.60-45,618.24-12,877.28

Finding the Fourth Proportional to 30,431.60, 45,618.24 and 12,877.28

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Solution

The fourth proportional to 30,431.60, 45,618.24 and 12,877.28 is: 19,303.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,431.60 : 45,618.24 = 12,877.28 : x
  2. Step 2: Convert to fraction form
    30,431.60/45,618.24 = 12,877.28/x
  3. Step 3: Cross multiply
    30,431.60x = 45,618.24 × 12,877.28
  4. Step 4: Simplify right side
    30,431.60x = 587,438,849.59
  5. Step 5: Solve for x
    x = 587,438,849.59/30,431.60
  6. Step 6: Final answer
    x = 19,303.58

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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.