Home / 15,389.16-21,245.58-10,091.76

Finding the Fourth Proportional to 15,389.16, 21,245.58 and 10,091.76

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Solution

The fourth proportional to 15,389.16, 21,245.58 and 10,091.76 is: 13,932.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,389.16 : 21,245.58 = 10,091.76 : x
  2. Step 2: Convert to fraction form
    15,389.16/21,245.58 = 10,091.76/x
  3. Step 3: Cross multiply
    15,389.16x = 21,245.58 × 10,091.76
  4. Step 4: Simplify right side
    15,389.16x = 214,405,294.42
  5. Step 5: Solve for x
    x = 214,405,294.42/15,389.16
  6. Step 6: Final answer
    x = 13,932.23

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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.