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Finding the Fourth Proportional to 21,407.40, 32,102.91 and 7,364.88

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Solution

The fourth proportional to 21,407.40, 32,102.91 and 7,364.88 is: 11,044.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.40 : 32,102.91 = 7,364.88 : x
  2. Step 2: Convert to fraction form
    21,407.40/32,102.91 = 7,364.88/x
  3. Step 3: Cross multiply
    21,407.40x = 32,102.91 × 7,364.88
  4. Step 4: Simplify right side
    21,407.40x = 236,434,079.80
  5. Step 5: Solve for x
    x = 236,434,079.80/21,407.40
  6. Step 6: Final answer
    x = 11,044.50

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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.