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Finding the Fourth Proportional to 38,884.80, 58,334.40 and 12,590.40

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Solution

The fourth proportional to 38,884.80, 58,334.40 and 12,590.40 is: 18,887.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,884.80 : 58,334.40 = 12,590.40 : x
  2. Step 2: Convert to fraction form
    38,884.80/58,334.40 = 12,590.40/x
  3. Step 3: Cross multiply
    38,884.80x = 58,334.40 × 12,590.40
  4. Step 4: Simplify right side
    38,884.80x = 734,453,429.76
  5. Step 5: Solve for x
    x = 734,453,429.76/38,884.80
  6. Step 6: Final answer
    x = 18,887.93

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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.