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Finding the Fourth Proportional to 21,402.71, 32,111.67 and 9,555.41

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Solution

The fourth proportional to 21,402.71, 32,111.67 and 9,555.41 is: 14,336.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.71 : 32,111.67 = 9,555.41 : x
  2. Step 2: Convert to fraction form
    21,402.71/32,111.67 = 9,555.41/x
  3. Step 3: Cross multiply
    21,402.71x = 32,111.67 × 9,555.41
  4. Step 4: Simplify right side
    21,402.71x = 306,840,012.08
  5. Step 5: Solve for x
    x = 306,840,012.08/21,402.71
  6. Step 6: Final answer
    x = 14,336.51

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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.