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Finding the Fourth Proportional to 21,411.64, 32,109.48 and 7,367.74

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Solution

The fourth proportional to 21,411.64, 32,109.48 and 7,367.74 is: 11,048.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.64 : 32,109.48 = 7,367.74 : x
  2. Step 2: Convert to fraction form
    21,411.64/32,109.48 = 7,367.74/x
  3. Step 3: Cross multiply
    21,411.64x = 32,109.48 × 7,367.74
  4. Step 4: Simplify right side
    21,411.64x = 236,574,300.18
  5. Step 5: Solve for x
    x = 236,574,300.18/21,411.64
  6. Step 6: Final answer
    x = 11,048.86

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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.