Home / 39,085.13-53,937.11-21,180.08

Finding the Fourth Proportional to 39,085.13, 53,937.11 and 21,180.08

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Solution

The fourth proportional to 39,085.13, 53,937.11 and 21,180.08 is: 29,228.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,085.13 : 53,937.11 = 21,180.08 : x
  2. Step 2: Convert to fraction form
    39,085.13/53,937.11 = 21,180.08/x
  3. Step 3: Cross multiply
    39,085.13x = 53,937.11 × 21,180.08
  4. Step 4: Simplify right side
    39,085.13x = 1,142,392,492.56
  5. Step 5: Solve for x
    x = 1,142,392,492.56/39,085.13
  6. Step 6: Final answer
    x = 29,228.31

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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.