Home / 39,208.65-54,108.21-21,303.64

Finding the Fourth Proportional to 39,208.65, 54,108.21 and 21,303.64

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Solution

The fourth proportional to 39,208.65, 54,108.21 and 21,303.64 is: 29,399.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,208.65 : 54,108.21 = 21,303.64 : x
  2. Step 2: Convert to fraction form
    39,208.65/54,108.21 = 21,303.64/x
  3. Step 3: Cross multiply
    39,208.65x = 54,108.21 × 21,303.64
  4. Step 4: Simplify right side
    39,208.65x = 1,152,701,826.88
  5. Step 5: Solve for x
    x = 1,152,701,826.88/39,208.65
  6. Step 6: Final answer
    x = 29,399.17

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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.