Home / 11,390.49-17,011.96-11,315.97

Finding the Fourth Proportional to 11,390.49, 17,011.96 and 11,315.97

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Solution

The fourth proportional to 11,390.49, 17,011.96 and 11,315.97 is: 16,900.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.49 : 17,011.96 = 11,315.97 : x
  2. Step 2: Convert to fraction form
    11,390.49/17,011.96 = 11,315.97/x
  3. Step 3: Cross multiply
    11,390.49x = 17,011.96 × 11,315.97
  4. Step 4: Simplify right side
    11,390.49x = 192,506,800.71
  5. Step 5: Solve for x
    x = 192,506,800.71/11,390.49
  6. Step 6: Final answer
    x = 16,900.66

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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.