Home / 38,656.54-53,344.74-21,428.18

Finding the Fourth Proportional to 38,656.54, 53,344.74 and 21,428.18

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Solution

The fourth proportional to 38,656.54, 53,344.74 and 21,428.18 is: 29,570.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,656.54 : 53,344.74 = 21,428.18 : x
  2. Step 2: Convert to fraction form
    38,656.54/53,344.74 = 21,428.18/x
  3. Step 3: Cross multiply
    38,656.54x = 53,344.74 × 21,428.18
  4. Step 4: Simplify right side
    38,656.54x = 1,143,080,771.30
  5. Step 5: Solve for x
    x = 1,143,080,771.30/38,656.54
  6. Step 6: Final answer
    x = 29,570.18

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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.