Home / 21,775.15-30,051.69-13,277.74

Finding the Fourth Proportional to 21,775.15, 30,051.69 and 13,277.74

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Solution

The fourth proportional to 21,775.15, 30,051.69 and 13,277.74 is: 18,324.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.15 : 30,051.69 = 13,277.74 : x
  2. Step 2: Convert to fraction form
    21,775.15/30,051.69 = 13,277.74/x
  3. Step 3: Cross multiply
    21,775.15x = 30,051.69 × 13,277.74
  4. Step 4: Simplify right side
    21,775.15x = 399,018,526.38
  5. Step 5: Solve for x
    x = 399,018,526.38/21,775.15
  6. Step 6: Final answer
    x = 18,324.49

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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.