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Finding the Fourth Proportional to 38,590.63, 53,253.61 and 21,823.99

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Solution

The fourth proportional to 38,590.63, 53,253.61 and 21,823.99 is: 30,116.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,590.63 : 53,253.61 = 21,823.99 : x
  2. Step 2: Convert to fraction form
    38,590.63/53,253.61 = 21,823.99/x
  3. Step 3: Cross multiply
    38,590.63x = 53,253.61 × 21,823.99
  4. Step 4: Simplify right side
    38,590.63x = 1,162,206,252.10
  5. Step 5: Solve for x
    x = 1,162,206,252.10/38,590.63
  6. Step 6: Final answer
    x = 30,116.28

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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.