Home / 39,320.89-54,260.91-21,415.77

Finding the Fourth Proportional to 39,320.89, 54,260.91 and 21,415.77

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Solution

The fourth proportional to 39,320.89, 54,260.91 and 21,415.77 is: 29,552.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,320.89 : 54,260.91 = 21,415.77 : x
  2. Step 2: Convert to fraction form
    39,320.89/54,260.91 = 21,415.77/x
  3. Step 3: Cross multiply
    39,320.89x = 54,260.91 × 21,415.77
  4. Step 4: Simplify right side
    39,320.89x = 1,162,039,168.55
  5. Step 5: Solve for x
    x = 1,162,039,168.55/39,320.89
  6. Step 6: Final answer
    x = 29,552.72

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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.