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Finding the Fourth Proportional to 38,666.40, 58,010.40 and 18,945.60

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Solution

The fourth proportional to 38,666.40, 58,010.40 and 18,945.60 is: 28,423.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,666.40 : 58,010.40 = 18,945.60 : x
  2. Step 2: Convert to fraction form
    38,666.40/58,010.40 = 18,945.60/x
  3. Step 3: Cross multiply
    38,666.40x = 58,010.40 × 18,945.60
  4. Step 4: Simplify right side
    38,666.40x = 1,099,041,834.24
  5. Step 5: Solve for x
    x = 1,099,041,834.24/38,666.40
  6. Step 6: Final answer
    x = 28,423.69

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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.