Home / 47,972.64-71,953.80-12,915.84

Finding the Fourth Proportional to 47,972.64, 71,953.80 and 12,915.84

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Solution

The fourth proportional to 47,972.64, 71,953.80 and 12,915.84 is: 19,372.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,972.64 : 71,953.80 = 12,915.84 : x
  2. Step 2: Convert to fraction form
    47,972.64/71,953.80 = 12,915.84/x
  3. Step 3: Cross multiply
    47,972.64x = 71,953.80 × 12,915.84
  4. Step 4: Simplify right side
    47,972.64x = 929,343,768.19
  5. Step 5: Solve for x
    x = 929,343,768.19/47,972.64
  6. Step 6: Final answer
    x = 19,372.37

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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.