Home / 15,013.72-20,718.63-8,299.63

Finding the Fourth Proportional to 15,013.72, 20,718.63 and 8,299.63

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Solution

The fourth proportional to 15,013.72, 20,718.63 and 8,299.63 is: 11,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,013.72 : 20,718.63 = 8,299.63 : x
  2. Step 2: Convert to fraction form
    15,013.72/20,718.63 = 8,299.63/x
  3. Step 3: Cross multiply
    15,013.72x = 20,718.63 × 8,299.63
  4. Step 4: Simplify right side
    15,013.72x = 171,956,989.01
  5. Step 5: Solve for x
    x = 171,956,989.01/15,013.72
  6. Step 6: Final answer
    x = 11,453.32

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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.