Home / 38,775.96-53,510.85-21,780.24

Finding the Fourth Proportional to 38,775.96, 53,510.85 and 21,780.24

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Solution

The fourth proportional to 38,775.96, 53,510.85 and 21,780.24 is: 30,056.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,775.96 : 53,510.85 = 21,780.24 : x
  2. Step 2: Convert to fraction form
    38,775.96/53,510.85 = 21,780.24/x
  3. Step 3: Cross multiply
    38,775.96x = 53,510.85 × 21,780.24
  4. Step 4: Simplify right side
    38,775.96x = 1,165,479,155.60
  5. Step 5: Solve for x
    x = 1,165,479,155.60/38,775.96
  6. Step 6: Final answer
    x = 30,056.75

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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.