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Finding the Fourth Proportional to 21,693.40, 32,540.10 and 10,029.40

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Solution

The fourth proportional to 21,693.40, 32,540.10 and 10,029.40 is: 15,044.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,693.40 : 32,540.10 = 10,029.40 : x
  2. Step 2: Convert to fraction form
    21,693.40/32,540.10 = 10,029.40/x
  3. Step 3: Cross multiply
    21,693.40x = 32,540.10 × 10,029.40
  4. Step 4: Simplify right side
    21,693.40x = 326,357,678.94
  5. Step 5: Solve for x
    x = 326,357,678.94/21,693.40
  6. Step 6: Final answer
    x = 15,044.10

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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.