Home / 38,665.89-53,363.21-21,672.90

Finding the Fourth Proportional to 38,665.89, 53,363.21 and 21,672.90

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Solution

The fourth proportional to 38,665.89, 53,363.21 and 21,672.90 is: 29,911.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,665.89 : 53,363.21 = 21,672.90 : x
  2. Step 2: Convert to fraction form
    38,665.89/53,363.21 = 21,672.90/x
  3. Step 3: Cross multiply
    38,665.89x = 53,363.21 × 21,672.90
  4. Step 4: Simplify right side
    38,665.89x = 1,156,535,405.64
  5. Step 5: Solve for x
    x = 1,156,535,405.64/38,665.89
  6. Step 6: Final answer
    x = 29,911.00

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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.