Home / 11,898.16-17,769.12-9,561.72

Finding the Fourth Proportional to 11,898.16, 17,769.12 and 9,561.72

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Solution

The fourth proportional to 11,898.16, 17,769.12 and 9,561.72 is: 14,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,898.16 : 17,769.12 = 9,561.72 : x
  2. Step 2: Convert to fraction form
    11,898.16/17,769.12 = 9,561.72/x
  3. Step 3: Cross multiply
    11,898.16x = 17,769.12 × 9,561.72
  4. Step 4: Simplify right side
    11,898.16x = 169,903,350.09
  5. Step 5: Solve for x
    x = 169,903,350.09/11,898.16
  6. Step 6: Final answer
    x = 14,279.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.