Home / 39,217.52-54,120.69-21,312.81

Finding the Fourth Proportional to 39,217.52, 54,120.69 and 21,312.81

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Solution

The fourth proportional to 39,217.52, 54,120.69 and 21,312.81 is: 29,411.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,217.52 : 54,120.69 = 21,312.81 : x
  2. Step 2: Convert to fraction form
    39,217.52/54,120.69 = 21,312.81/x
  3. Step 3: Cross multiply
    39,217.52x = 54,120.69 × 21,312.81
  4. Step 4: Simplify right side
    39,217.52x = 1,153,463,983.04
  5. Step 5: Solve for x
    x = 1,153,463,983.04/39,217.52
  6. Step 6: Final answer
    x = 29,411.95

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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.