Home / 15,529.54-21,430.60-8,455.94

Finding the Fourth Proportional to 15,529.54, 21,430.60 and 8,455.94

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Solution

The fourth proportional to 15,529.54, 21,430.60 and 8,455.94 is: 11,669.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.54 : 21,430.60 = 8,455.94 : x
  2. Step 2: Convert to fraction form
    15,529.54/21,430.60 = 8,455.94/x
  3. Step 3: Cross multiply
    15,529.54x = 21,430.60 × 8,455.94
  4. Step 4: Simplify right side
    15,529.54x = 181,215,867.76
  5. Step 5: Solve for x
    x = 181,215,867.76/15,529.54
  6. Step 6: Final answer
    x = 11,669.11

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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.