Home / 39,210.52-54,111.04-21,305.84

Finding the Fourth Proportional to 39,210.52, 54,111.04 and 21,305.84

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Solution

The fourth proportional to 39,210.52, 54,111.04 and 21,305.84 is: 29,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,210.52 : 54,111.04 = 21,305.84 : x
  2. Step 2: Convert to fraction form
    39,210.52/54,111.04 = 21,305.84/x
  3. Step 3: Cross multiply
    39,210.52x = 54,111.04 × 21,305.84
  4. Step 4: Simplify right side
    39,210.52x = 1,152,881,160.47
  5. Step 5: Solve for x
    x = 1,152,881,160.47/39,210.52
  6. Step 6: Final answer
    x = 29,402.34

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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.