Home / 15,391.68-21,237.84-9,101.76

Finding the Fourth Proportional to 15,391.68, 21,237.84 and 9,101.76

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Solution

The fourth proportional to 15,391.68, 21,237.84 and 9,101.76 is: 12,558.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.68 : 21,237.84 = 9,101.76 : x
  2. Step 2: Convert to fraction form
    15,391.68/21,237.84 = 9,101.76/x
  3. Step 3: Cross multiply
    15,391.68x = 21,237.84 × 9,101.76
  4. Step 4: Simplify right side
    15,391.68x = 193,301,722.60
  5. Step 5: Solve for x
    x = 193,301,722.60/15,391.68
  6. Step 6: Final answer
    x = 12,558.84

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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.