Home / 28,756.34-43,116.65-12,107.80

Finding the Fourth Proportional to 28,756.34, 43,116.65 and 12,107.80

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Solution

The fourth proportional to 28,756.34, 43,116.65 and 12,107.80 is: 18,154.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,756.34 : 43,116.65 = 12,107.80 : x
  2. Step 2: Convert to fraction form
    28,756.34/43,116.65 = 12,107.80/x
  3. Step 3: Cross multiply
    28,756.34x = 43,116.65 × 12,107.80
  4. Step 4: Simplify right side
    28,756.34x = 522,047,774.87
  5. Step 5: Solve for x
    x = 522,047,774.87/28,756.34
  6. Step 6: Final answer
    x = 18,154.18

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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.