Home / 38,673.86-53,369.43-21,678.08

Finding the Fourth Proportional to 38,673.86, 53,369.43 and 21,678.08

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Solution

The fourth proportional to 38,673.86, 53,369.43 and 21,678.08 is: 29,915.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,673.86 : 53,369.43 = 21,678.08 : x
  2. Step 2: Convert to fraction form
    38,673.86/53,369.43 = 21,678.08/x
  3. Step 3: Cross multiply
    38,673.86x = 53,369.43 × 21,678.08
  4. Step 4: Simplify right side
    38,673.86x = 1,156,946,773.09
  5. Step 5: Solve for x
    x = 1,156,946,773.09/38,673.86
  6. Step 6: Final answer
    x = 29,915.47

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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.