Home / 15,011.83-20,717.58-8,298.78

Finding the Fourth Proportional to 15,011.83, 20,717.58 and 8,298.78

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Solution

The fourth proportional to 15,011.83, 20,717.58 and 8,298.78 is: 11,453.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.83 : 20,717.58 = 8,298.78 : x
  2. Step 2: Convert to fraction form
    15,011.83/20,717.58 = 8,298.78/x
  3. Step 3: Cross multiply
    15,011.83x = 20,717.58 × 8,298.78
  4. Step 4: Simplify right side
    15,011.83x = 171,930,638.55
  5. Step 5: Solve for x
    x = 171,930,638.55/15,011.83
  6. Step 6: Final answer
    x = 11,453.01

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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.