Home / 13,446.52-18,555.60-7,780.98

Finding the Fourth Proportional to 13,446.52, 18,555.60 and 7,780.98

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Solution

The fourth proportional to 13,446.52, 18,555.60 and 7,780.98 is: 10,737.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.52 : 18,555.60 = 7,780.98 : x
  2. Step 2: Convert to fraction form
    13,446.52/18,555.60 = 7,780.98/x
  3. Step 3: Cross multiply
    13,446.52x = 18,555.60 × 7,780.98
  4. Step 4: Simplify right side
    13,446.52x = 144,380,752.49
  5. Step 5: Solve for x
    x = 144,380,752.49/13,446.52
  6. Step 6: Final answer
    x = 10,737.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.