Home / 39,210.14-54,109.89-21,305.21

Finding the Fourth Proportional to 39,210.14, 54,109.89 and 21,305.21

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Solution

The fourth proportional to 39,210.14, 54,109.89 and 21,305.21 is: 29,401.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,210.14 : 54,109.89 = 21,305.21 : x
  2. Step 2: Convert to fraction form
    39,210.14/54,109.89 = 21,305.21/x
  3. Step 3: Cross multiply
    39,210.14x = 54,109.89 × 21,305.21
  4. Step 4: Simplify right side
    39,210.14x = 1,152,822,603.35
  5. Step 5: Solve for x
    x = 1,152,822,603.35/39,210.14
  6. Step 6: Final answer
    x = 29,401.13

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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.