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Finding the Fourth Proportional to 35,630.40, 53,343.20 and 21,806.40

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Solution

The fourth proportional to 35,630.40, 53,343.20 and 21,806.40 is: 32,646.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,630.40 : 53,343.20 = 21,806.40 : x
  2. Step 2: Convert to fraction form
    35,630.40/53,343.20 = 21,806.40/x
  3. Step 3: Cross multiply
    35,630.40x = 53,343.20 × 21,806.40
  4. Step 4: Simplify right side
    35,630.40x = 1,163,223,156.48
  5. Step 5: Solve for x
    x = 1,163,223,156.48/35,630.40
  6. Step 6: Final answer
    x = 32,646.93

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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.