Home / 12,298.70-16,942.58-9,780.02

Finding the Fourth Proportional to 12,298.70, 16,942.58 and 9,780.02

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Solution

The fourth proportional to 12,298.70, 16,942.58 and 9,780.02 is: 13,472.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,298.70 : 16,942.58 = 9,780.02 : x
  2. Step 2: Convert to fraction form
    12,298.70/16,942.58 = 9,780.02/x
  3. Step 3: Cross multiply
    12,298.70x = 16,942.58 × 9,780.02
  4. Step 4: Simplify right side
    12,298.70x = 165,698,771.25
  5. Step 5: Solve for x
    x = 165,698,771.25/12,298.70
  6. Step 6: Final answer
    x = 13,472.87

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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.