Home / 15,315.72-21,134.72-8,601.17

Finding the Fourth Proportional to 15,315.72, 21,134.72 and 8,601.17

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Solution

The fourth proportional to 15,315.72, 21,134.72 and 8,601.17 is: 11,869.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.72 : 21,134.72 = 8,601.17 : x
  2. Step 2: Convert to fraction form
    15,315.72/21,134.72 = 8,601.17/x
  3. Step 3: Cross multiply
    15,315.72x = 21,134.72 × 8,601.17
  4. Step 4: Simplify right side
    15,315.72x = 181,783,354.33
  5. Step 5: Solve for x
    x = 181,783,354.33/15,315.72
  6. Step 6: Final answer
    x = 11,869.07

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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.