Home / 39,208.79-54,108.22-21,303.82

Finding the Fourth Proportional to 39,208.79, 54,108.22 and 21,303.82

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Solution

The fourth proportional to 39,208.79, 54,108.22 and 21,303.82 is: 29,399.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,208.79 : 54,108.22 = 21,303.82 : x
  2. Step 2: Convert to fraction form
    39,208.79/54,108.22 = 21,303.82/x
  3. Step 3: Cross multiply
    39,208.79x = 54,108.22 × 21,303.82
  4. Step 4: Simplify right side
    39,208.79x = 1,152,711,590.87
  5. Step 5: Solve for x
    x = 1,152,711,590.87/39,208.79
  6. Step 6: Final answer
    x = 29,399.31

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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.