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Finding the Fourth Proportional to 31,487, 43,455.84 and 18,060.44

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Solution

The fourth proportional to 31,487, 43,455.84 and 18,060.44 is: 24,925.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487 : 43,455.84 = 18,060.44 : x
  2. Step 2: Convert to fraction form
    31,487/43,455.84 = 18,060.44/x
  3. Step 3: Cross multiply
    31,487x = 43,455.84 × 18,060.44
  4. Step 4: Simplify right side
    31,487x = 784,831,590.97
  5. Step 5: Solve for x
    x = 784,831,590.97/31,487
  6. Step 6: Final answer
    x = 24,925.58

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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.