Home / 39,710.76-54,798.70-21,808.12

Finding the Fourth Proportional to 39,710.76, 54,798.70 and 21,808.12

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Solution

The fourth proportional to 39,710.76, 54,798.70 and 21,808.12 is: 30,094.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,710.76 : 54,798.70 = 21,808.12 : x
  2. Step 2: Convert to fraction form
    39,710.76/54,798.70 = 21,808.12/x
  3. Step 3: Cross multiply
    39,710.76x = 54,798.70 × 21,808.12
  4. Step 4: Simplify right side
    39,710.76x = 1,195,056,625.44
  5. Step 5: Solve for x
    x = 1,195,056,625.44/39,710.76
  6. Step 6: Final answer
    x = 30,094.03

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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.