Home / 15,471.19-21,351.29-8,756.79

Finding the Fourth Proportional to 15,471.19, 21,351.29 and 8,756.79

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Solution

The fourth proportional to 15,471.19, 21,351.29 and 8,756.79 is: 12,084.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,471.19 : 21,351.29 = 8,756.79 : x
  2. Step 2: Convert to fraction form
    15,471.19/21,351.29 = 8,756.79/x
  3. Step 3: Cross multiply
    15,471.19x = 21,351.29 × 8,756.79
  4. Step 4: Simplify right side
    15,471.19x = 186,968,784.65
  5. Step 5: Solve for x
    x = 186,968,784.65/15,471.19
  6. Step 6: Final answer
    x = 12,084.97

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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.