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Finding the Fourth Proportional to 18,374.42, 25,368.84 and 16,381.52

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Solution

The fourth proportional to 18,374.42, 25,368.84 and 16,381.52 is: 22,617.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374.42 : 25,368.84 = 16,381.52 : x
  2. Step 2: Convert to fraction form
    18,374.42/25,368.84 = 16,381.52/x
  3. Step 3: Cross multiply
    18,374.42x = 25,368.84 × 16,381.52
  4. Step 4: Simplify right side
    18,374.42x = 415,580,159.84
  5. Step 5: Solve for x
    x = 415,580,159.84/18,374.42
  6. Step 6: Final answer
    x = 22,617.32

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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.