Home / 38,346.50-52,918.18-21,579.86

Finding the Fourth Proportional to 38,346.50, 52,918.18 and 21,579.86

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Solution

The fourth proportional to 38,346.50, 52,918.18 and 21,579.86 is: 29,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,346.50 : 52,918.18 = 21,579.86 : x
  2. Step 2: Convert to fraction form
    38,346.50/52,918.18 = 21,579.86/x
  3. Step 3: Cross multiply
    38,346.50x = 52,918.18 × 21,579.86
  4. Step 4: Simplify right side
    38,346.50x = 1,141,966,915.85
  5. Step 5: Solve for x
    x = 1,141,966,915.85/38,346.50
  6. Step 6: Final answer
    x = 29,780.21

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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.