Home / 21,127.16-31,688.68-5,544.79

Finding the Fourth Proportional to 21,127.16, 31,688.68 and 5,544.79

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Solution

The fourth proportional to 21,127.16, 31,688.68 and 5,544.79 is: 8,316.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.16 : 31,688.68 = 5,544.79 : x
  2. Step 2: Convert to fraction form
    21,127.16/31,688.68 = 5,544.79/x
  3. Step 3: Cross multiply
    21,127.16x = 31,688.68 × 5,544.79
  4. Step 4: Simplify right side
    21,127.16x = 175,706,989.82
  5. Step 5: Solve for x
    x = 175,706,989.82/21,127.16
  6. Step 6: Final answer
    x = 8,316.64

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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.