Home / 38,172.08-52,676.78-21,405.08

Finding the Fourth Proportional to 38,172.08, 52,676.78 and 21,405.08

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Solution

The fourth proportional to 38,172.08, 52,676.78 and 21,405.08 is: 29,538.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,172.08 : 52,676.78 = 21,405.08 : x
  2. Step 2: Convert to fraction form
    38,172.08/52,676.78 = 21,405.08/x
  3. Step 3: Cross multiply
    38,172.08x = 52,676.78 × 21,405.08
  4. Step 4: Simplify right side
    38,172.08x = 1,127,550,690.04
  5. Step 5: Solve for x
    x = 1,127,550,690.04/38,172.08
  6. Step 6: Final answer
    x = 29,538.62

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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.