Home / 15,500.59-21,390.21-8,427.02

Finding the Fourth Proportional to 15,500.59, 21,390.21 and 8,427.02

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Solution

The fourth proportional to 15,500.59, 21,390.21 and 8,427.02 is: 11,628.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.59 : 21,390.21 = 8,427.02 : x
  2. Step 2: Convert to fraction form
    15,500.59/21,390.21 = 8,427.02/x
  3. Step 3: Cross multiply
    15,500.59x = 21,390.21 × 8,427.02
  4. Step 4: Simplify right side
    15,500.59x = 180,255,620.52
  5. Step 5: Solve for x
    x = 180,255,620.52/15,500.59
  6. Step 6: Final answer
    x = 11,628.95

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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.