Home / 18,910.65-28,340.91-7,810.95

Finding the Fourth Proportional to 18,910.65, 28,340.91 and 7,810.95

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Solution

The fourth proportional to 18,910.65, 28,340.91 and 7,810.95 is: 11,706.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.65 : 28,340.91 = 7,810.95 : x
  2. Step 2: Convert to fraction form
    18,910.65/28,340.91 = 7,810.95/x
  3. Step 3: Cross multiply
    18,910.65x = 28,340.91 × 7,810.95
  4. Step 4: Simplify right side
    18,910.65x = 221,369,430.96
  5. Step 5: Solve for x
    x = 221,369,430.96/18,910.65
  6. Step 6: Final answer
    x = 11,706.07

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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.