Home / 30,387.43-45,586.02-12,857.41

Finding the Fourth Proportional to 30,387.43, 45,586.02 and 12,857.41

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Solution

The fourth proportional to 30,387.43, 45,586.02 and 12,857.41 is: 19,288.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.43 : 45,586.02 = 12,857.41 : x
  2. Step 2: Convert to fraction form
    30,387.43/45,586.02 = 12,857.41/x
  3. Step 3: Cross multiply
    30,387.43x = 45,586.02 × 12,857.41
  4. Step 4: Simplify right side
    30,387.43x = 586,118,149.41
  5. Step 5: Solve for x
    x = 586,118,149.41/30,387.43
  6. Step 6: Final answer
    x = 19,288.18

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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.