Home / 19,989.27-27,701.85-19,707.39

Finding the Fourth Proportional to 19,989.27, 27,701.85 and 19,707.39

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Solution

The fourth proportional to 19,989.27, 27,701.85 and 19,707.39 is: 27,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.27 : 27,701.85 = 19,707.39 : x
  2. Step 2: Convert to fraction form
    19,989.27/27,701.85 = 19,707.39/x
  3. Step 3: Cross multiply
    19,989.27x = 27,701.85 × 19,707.39
  4. Step 4: Simplify right side
    19,989.27x = 545,931,161.67
  5. Step 5: Solve for x
    x = 545,931,161.67/19,989.27
  6. Step 6: Final answer
    x = 27,311.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.