Home / 21,186.56-31,779.52-7,335.68

Finding the Fourth Proportional to 21,186.56, 31,779.52 and 7,335.68

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Solution

The fourth proportional to 21,186.56, 31,779.52 and 7,335.68 is: 11,003.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.56 : 31,779.52 = 7,335.68 : x
  2. Step 2: Convert to fraction form
    21,186.56/31,779.52 = 7,335.68/x
  3. Step 3: Cross multiply
    21,186.56x = 31,779.52 × 7,335.68
  4. Step 4: Simplify right side
    21,186.56x = 233,124,389.27
  5. Step 5: Solve for x
    x = 233,124,389.27/21,186.56
  6. Step 6: Final answer
    x = 11,003.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.