Home / 20,579.32-30,856.02-13,551.76

Finding the Fourth Proportional to 20,579.32, 30,856.02 and 13,551.76

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Solution

The fourth proportional to 20,579.32, 30,856.02 and 13,551.76 is: 20,319.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.32 : 30,856.02 = 13,551.76 : x
  2. Step 2: Convert to fraction form
    20,579.32/30,856.02 = 13,551.76/x
  3. Step 3: Cross multiply
    20,579.32x = 30,856.02 × 13,551.76
  4. Step 4: Simplify right side
    20,579.32x = 418,153,377.60
  5. Step 5: Solve for x
    x = 418,153,377.60/20,579.32
  6. Step 6: Final answer
    x = 20,319.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.