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Finding the Fourth Proportional to 38,153.91, 52,653.02 and 21,158.86

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Solution

The fourth proportional to 38,153.91, 52,653.02 and 21,158.86 is: 29,199.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,153.91 : 52,653.02 = 21,158.86 : x
  2. Step 2: Convert to fraction form
    38,153.91/52,653.02 = 21,158.86/x
  3. Step 3: Cross multiply
    38,153.91x = 52,653.02 × 21,158.86
  4. Step 4: Simplify right side
    38,153.91x = 1,114,077,878.76
  5. Step 5: Solve for x
    x = 1,114,077,878.76/38,153.91
  6. Step 6: Final answer
    x = 29,199.57

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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.