Home / 15,510.65-21,399.86-8,795.75

Finding the Fourth Proportional to 15,510.65, 21,399.86 and 8,795.75

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Solution

The fourth proportional to 15,510.65, 21,399.86 and 8,795.75 is: 12,135.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.65 : 21,399.86 = 8,795.75 : x
  2. Step 2: Convert to fraction form
    15,510.65/21,399.86 = 8,795.75/x
  3. Step 3: Cross multiply
    15,510.65x = 21,399.86 × 8,795.75
  4. Step 4: Simplify right side
    15,510.65x = 188,227,733.59
  5. Step 5: Solve for x
    x = 188,227,733.59/15,510.65
  6. Step 6: Final answer
    x = 12,135.39

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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.