Home / 39,717.32-54,810.81-21,813.50

Finding the Fourth Proportional to 39,717.32, 54,810.81 and 21,813.50

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Solution

The fourth proportional to 39,717.32, 54,810.81 and 21,813.50 is: 30,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,717.32 : 54,810.81 = 21,813.50 : x
  2. Step 2: Convert to fraction form
    39,717.32/54,810.81 = 21,813.50/x
  3. Step 3: Cross multiply
    39,717.32x = 54,810.81 × 21,813.50
  4. Step 4: Simplify right side
    39,717.32x = 1,195,615,603.94
  5. Step 5: Solve for x
    x = 1,195,615,603.94/39,717.32
  6. Step 6: Final answer
    x = 30,103.13

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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.