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Finding the Fourth Proportional to 38,368.80, 52,942.80 and 21,598.56

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Solution

The fourth proportional to 38,368.80, 52,942.80 and 21,598.56 is: 29,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,368.80 : 52,942.80 = 21,598.56 : x
  2. Step 2: Convert to fraction form
    38,368.80/52,942.80 = 21,598.56/x
  3. Step 3: Cross multiply
    38,368.80x = 52,942.80 × 21,598.56
  4. Step 4: Simplify right side
    38,368.80x = 1,143,488,242.37
  5. Step 5: Solve for x
    x = 1,143,488,242.37/38,368.80
  6. Step 6: Final answer
    x = 29,802.55

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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.