Home / 15,267.60-21,071.24-8,980.56

Finding the Fourth Proportional to 15,267.60, 21,071.24 and 8,980.56

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Solution

The fourth proportional to 15,267.60, 21,071.24 and 8,980.56 is: 12,394.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,267.60 : 21,071.24 = 8,980.56 : x
  2. Step 2: Convert to fraction form
    15,267.60/21,071.24 = 8,980.56/x
  3. Step 3: Cross multiply
    15,267.60x = 21,071.24 × 8,980.56
  4. Step 4: Simplify right side
    15,267.60x = 189,231,535.09
  5. Step 5: Solve for x
    x = 189,231,535.09/15,267.60
  6. Step 6: Final answer
    x = 12,394.32

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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.