Home / 30,417.30-45,601.65-12,872.70

Finding the Fourth Proportional to 30,417.30, 45,601.65 and 12,872.70

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Solution

The fourth proportional to 30,417.30, 45,601.65 and 12,872.70 is: 19,298.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,417.30 : 45,601.65 = 12,872.70 : x
  2. Step 2: Convert to fraction form
    30,417.30/45,601.65 = 12,872.70/x
  3. Step 3: Cross multiply
    30,417.30x = 45,601.65 × 12,872.70
  4. Step 4: Simplify right side
    30,417.30x = 587,016,359.96
  5. Step 5: Solve for x
    x = 587,016,359.96/30,417.30
  6. Step 6: Final answer
    x = 19,298.77

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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.