Home / 28,931.46-43,403-12,291.36

Finding the Fourth Proportional to 28,931.46, 43,403 and 12,291.36

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Solution

The fourth proportional to 28,931.46, 43,403 and 12,291.36 is: 18,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.46 : 43,403 = 12,291.36 : x
  2. Step 2: Convert to fraction form
    28,931.46/43,403 = 12,291.36/x
  3. Step 3: Cross multiply
    28,931.46x = 43,403 × 12,291.36
  4. Step 4: Simplify right side
    28,931.46x = 533,481,898.08
  5. Step 5: Solve for x
    x = 533,481,898.08/28,931.46
  6. Step 6: Final answer
    x = 18,439.51

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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.