Home / 15,586.47-21,509.33-8,512.91

Finding the Fourth Proportional to 15,586.47, 21,509.33 and 8,512.91

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Solution

The fourth proportional to 15,586.47, 21,509.33 and 8,512.91 is: 11,747.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,586.47 : 21,509.33 = 8,512.91 : x
  2. Step 2: Convert to fraction form
    15,586.47/21,509.33 = 8,512.91/x
  3. Step 3: Cross multiply
    15,586.47x = 21,509.33 × 8,512.91
  4. Step 4: Simplify right side
    15,586.47x = 183,106,910.07
  5. Step 5: Solve for x
    x = 183,106,910.07/15,586.47
  6. Step 6: Final answer
    x = 11,747.81

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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.