Home / 38,985.94-53,800.56-21,080.90

Finding the Fourth Proportional to 38,985.94, 53,800.56 and 21,080.90

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Solution

The fourth proportional to 38,985.94, 53,800.56 and 21,080.90 is: 29,091.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.94 : 53,800.56 = 21,080.90 : x
  2. Step 2: Convert to fraction form
    38,985.94/53,800.56 = 21,080.90/x
  3. Step 3: Cross multiply
    38,985.94x = 53,800.56 × 21,080.90
  4. Step 4: Simplify right side
    38,985.94x = 1,134,164,225.30
  5. Step 5: Solve for x
    x = 1,134,164,225.30/38,985.94
  6. Step 6: Final answer
    x = 29,091.62

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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.