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Finding the Fourth Proportional to 38,683.79, 58,064.79 and 19,977.18

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Solution

The fourth proportional to 38,683.79, 58,064.79 and 19,977.18 is: 29,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,683.79 : 58,064.79 = 19,977.18 : x
  2. Step 2: Convert to fraction form
    38,683.79/58,064.79 = 19,977.18/x
  3. Step 3: Cross multiply
    38,683.79x = 58,064.79 × 19,977.18
  4. Step 4: Simplify right side
    38,683.79x = 1,159,970,761.49
  5. Step 5: Solve for x
    x = 1,159,970,761.49/38,683.79
  6. Step 6: Final answer
    x = 29,985.97

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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.