Home / 10,418.40-14,373.52-6,640.70

Finding the Fourth Proportional to 10,418.40, 14,373.52 and 6,640.70

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Solution

The fourth proportional to 10,418.40, 14,373.52 and 6,640.70 is: 9,161.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.40 : 14,373.52 = 6,640.70 : x
  2. Step 2: Convert to fraction form
    10,418.40/14,373.52 = 6,640.70/x
  3. Step 3: Cross multiply
    10,418.40x = 14,373.52 × 6,640.70
  4. Step 4: Simplify right side
    10,418.40x = 95,450,162.40
  5. Step 5: Solve for x
    x = 95,450,162.40/10,418.40
  6. Step 6: Final answer
    x = 9,161.69

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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.