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Finding the Fourth Proportional to 38,423.25, 53,024.09 and 21,656.25

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Solution

The fourth proportional to 38,423.25, 53,024.09 and 21,656.25 is: 29,885.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,423.25 : 53,024.09 = 21,656.25 : x
  2. Step 2: Convert to fraction form
    38,423.25/53,024.09 = 21,656.25/x
  3. Step 3: Cross multiply
    38,423.25x = 53,024.09 × 21,656.25
  4. Step 4: Simplify right side
    38,423.25x = 1,148,302,840.78
  5. Step 5: Solve for x
    x = 1,148,302,840.78/38,423.25
  6. Step 6: Final answer
    x = 29,885.63

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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.