Home / 21,126.09-31,686.69-5,544.93

Finding the Fourth Proportional to 21,126.09, 31,686.69 and 5,544.93

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Solution

The fourth proportional to 21,126.09, 31,686.69 and 5,544.93 is: 8,316.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.09 : 31,686.69 = 5,544.93 : x
  2. Step 2: Convert to fraction form
    21,126.09/31,686.69 = 5,544.93/x
  3. Step 3: Cross multiply
    21,126.09x = 31,686.69 × 5,544.93
  4. Step 4: Simplify right side
    21,126.09x = 175,700,477.98
  5. Step 5: Solve for x
    x = 175,700,477.98/21,126.09
  6. Step 6: Final answer
    x = 8,316.75

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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.