Home / 39,415.17-54,388.15-22,421.57

Finding the Fourth Proportional to 39,415.17, 54,388.15 and 22,421.57

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Solution

The fourth proportional to 39,415.17, 54,388.15 and 22,421.57 is: 30,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,415.17 : 54,388.15 = 22,421.57 : x
  2. Step 2: Convert to fraction form
    39,415.17/54,388.15 = 22,421.57/x
  3. Step 3: Cross multiply
    39,415.17x = 54,388.15 × 22,421.57
  4. Step 4: Simplify right side
    39,415.17x = 1,219,467,712.40
  5. Step 5: Solve for x
    x = 1,219,467,712.40/39,415.17
  6. Step 6: Final answer
    x = 30,939.04

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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.