Home / 38,780.54-58,143.68-19,811.05

Finding the Fourth Proportional to 38,780.54, 58,143.68 and 19,811.05

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Solution

The fourth proportional to 38,780.54, 58,143.68 and 19,811.05 is: 29,702.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,780.54 : 58,143.68 = 19,811.05 : x
  2. Step 2: Convert to fraction form
    38,780.54/58,143.68 = 19,811.05/x
  3. Step 3: Cross multiply
    38,780.54x = 58,143.68 × 19,811.05
  4. Step 4: Simplify right side
    38,780.54x = 1,151,887,482.55
  5. Step 5: Solve for x
    x = 1,151,887,482.55/38,780.54
  6. Step 6: Final answer
    x = 29,702.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.