Home / 53,490.64-80,235.72-21,915.34

Finding the Fourth Proportional to 53,490.64, 80,235.72 and 21,915.34

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Solution

The fourth proportional to 53,490.64, 80,235.72 and 21,915.34 is: 32,872.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,490.64 : 80,235.72 = 21,915.34 : x
  2. Step 2: Convert to fraction form
    53,490.64/80,235.72 = 21,915.34/x
  3. Step 3: Cross multiply
    53,490.64x = 80,235.72 × 21,915.34
  4. Step 4: Simplify right side
    53,490.64x = 1,758,393,083.94
  5. Step 5: Solve for x
    x = 1,758,393,083.94/53,490.64
  6. Step 6: Final answer
    x = 32,872.91

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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.