Home / 19,113.67-28,663.21-9,116.65

Finding the Fourth Proportional to 19,113.67, 28,663.21 and 9,116.65

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Solution

The fourth proportional to 19,113.67, 28,663.21 and 9,116.65 is: 13,671.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.67 : 28,663.21 = 9,116.65 : x
  2. Step 2: Convert to fraction form
    19,113.67/28,663.21 = 9,116.65/x
  3. Step 3: Cross multiply
    19,113.67x = 28,663.21 × 9,116.65
  4. Step 4: Simplify right side
    19,113.67x = 261,312,453.45
  5. Step 5: Solve for x
    x = 261,312,453.45/19,113.67
  6. Step 6: Final answer
    x = 13,671.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.